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Littérature scientifique sur le sujet « Muscoviti »

Auteur : Grafiati
Publié le 14 mars 2023

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Articles de revues sur le sujet "Muscoviti"

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Monier, Gilles, et Jean-Louis Robert. « Muscovite solid solutions in the system K2O-MgO-FeO-Al2O3-SiO2-H2O : an experimental study at 2 kbar PH2O and comparison with natural Li-Free white micas ». Mineralogical Magazine 50, no 356 (juin 1986) : 257–66. http://dx.doi.org/10.1180/minmag.1986.050.356.08.

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AbstractThis paper presents the results of an experimental study of muscovite solid solutions in the system K2O-M2+O-Al2O3-SiO2-H2O-(HF), with M2+ = Mg2+ or Fe2+ in the temperature range 300-700°C under 2 kbar PH2O. Muscovite solid solutions can be described, in this system, as the result of two substitutions. One is the phengitic substitution (x), which preserves the pure dioctahedral character of the mica; the second is the biotitic substitution (y), which leads to trioctahedral micas and does not change the composition of the tetrahedral layer Si3Al. The general formula of muscovite in this system is K(Al2−x−2y∕3M2+x+y□1−y∕3)(Si3+xAl1−x)O10(OH,F)2. Both substitutions x and y are more extensive at lower temperatures. The extent of solid solution decreases drastically with increasing temperature.For T > 600°C, the phengitic substitution (x) becomes negligible, but some biotitic substitution (y) persists. This unsymmetrical decrease of the solid solution of muscovite with increasing temperature is similar to that previously observed in phlogopite, the micas with a tetrahedral layer composition of Si3Al being the most stable. The behaviour of muscovite solid solutions in the ferrous system is qualitatively identical to that observed in the magnesian one, but the extent of solid solution is smaller than with Mg2+. Fluorine neither changes the size nor the shape of the solid solution fields but increases their stability by about 50°C.A comparison of these experimental results with data on natural muscovites is presented. Most natural primary (magmatic) granitic muscovites lie very close to the muscovite end member, in agreement with their high-temperature origin. Low-temperature muscovites (300–400°C), typically muscovites from hydrothermally altered granitic rocks, can have high x and y values. The rate of the biotitic substitution y can reach 0.6, which corresponds to an octahedral occupancy of 2.2 atoms per formula unit (based on 11 oxygens), consistent with the experimental data.
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Peruzzo, Luca, Raffaele Sassi et F. P. Sassi. « Sulla vanabilità compositiva delle miche nell’amhito di uno stesso affioramento di metapeliti di basso grado : un esempio. 2 : Le muscoviti e considerazioni conclusive ». Rendiconti Lincei 3, no 1 (mars 1992) : 43–55. http://dx.doi.org/10.1007/bf03002963.

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Dallmeyer, R. D., J. D. Keppie et R. D. Nance. « 40Ar/39Ar ages of detrital muscovite within Lower Cambrian and Carboniferous clastic sequences in northern Nova Scotia and southern New Brunswick : implications for provenance regions ». Canadian Journal of Earth Sciences 34, no 2 (1 février 1997) : 156–68. http://dx.doi.org/10.1139/e17-013.

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Detrital muscovite from lowermost Cambrian sequences exposed in the Avalon Composite Terrane in Nova Scotia and New Brunswick record 40Ar/39Ar plateau ages of ca. 625–600 Ma. These are interpreted to date times of cooling in source areas. The regional distribution of coarse-grained detrital muscovite in Lower Cambrian rocks of Avalonian overstep sequences suggests a source region of dimensions considerably larger than any presently exposed in Appalachian segments of the Avalon Composite Terrane. Late Proterozoic tectonic reconstructions locate the Avalon Composite Terrane adjacent to northwestern South America, thereby suggesting a possible source within Late Proterozoic PanAfrican – Brasiliano orogens. Detrital muscovite from clastic sequences of the proximally derived, Lower Carboniferous (Tournaisian) Horton Group and the more distal Upper Carboniferous (Westphalian D – Stephanian) Pictou Group in Nova Scotia records 40Ar/39Ar spectra that define plateau ages of ca. 390–380 Ma (Horton Group) and and ca. 370 Ma (Pictou Group). Finer grained fractions from samples of the Horton Group display more internally discordant age spectra defining total-gas ages of ca. 397–395 Ma. A provenance for the finer muscovite may be found in southern Nova Scotia where Cambrian–Ordovician turbidites of the Meguma Group display a regionally developed micaceous cleavage of this age. The ca. 390–380 Ma detrital muscovites probably were derived from granite stocks presently exposed in proximal areas of northernmost Cape Breton Island. A more distal source for the ca. 370 Ma detrital muscovites in the Pictou Group is suggested by its original extensive distribution, although a local, possibly recycled, source may also have been present. The presence of only 400–370 Ma detrital muscovite suggests a rapidly exhumed orogenic source with characteristics similar to those of crystalline rocks presently exposed in the Cape Breton Highlands and (or) the Meguma Terrane.
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Treloar, Peter J. « Chromian muscovites and epidotes from Outokumpu, Finland ». Mineralogical Magazine 51, no 362 (octobre 1987) : 593–99. http://dx.doi.org/10.1180/minmag.1987.051.362.14.

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AbstractThe Outokumpu region of Finland is notable for the large number of Cr-rich silicate and oxide phases associated with the massive sulphide deposits. In this paper analyses of Cr-rich phases in the epidote-clinozoisite and muscovite groups are presented. The muscovite-type phase shows a maximum 80% substitution of Cr for A1 on octahedral sites with a maximum 24.7 wt.% Cr2O3. Apparent complete solid solution between this extreme composition and the fuchsitic muscovites is indicated. The clinozoisite type phase has a maximum 15.4 wt.% Cr2O3, with a composition close to Ca2CrAl2Si3O12(OH). As with the micas, complete solid solution of Cr for Al in the clinozoisite structure is indicated.
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Pereira, Ronaldo Mello, Diana Rodrigues, Ciro Alexandre Ávila et Reiner Neumann. « Stockscheider Quartzo-Moscovíticos e Pegmatíticos na Zona de Cúpula do Granitóide Ritápolis, Região de São João del Rei, Minas Gerais ». Anuário do Instituto de Geociências 34, no 2 (1 janvier 2011) : 59–69. http://dx.doi.org/10.11137/2011_2_59-69.

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Clusters of essentially quartz-muscovitic rocks were found in four areas of the São João del Rei Pegmatite Province in close association with pegmatites positioned parallel to the contact between the Ritápolis granitoid and the metavolcanic - metasedimentary rocks of the Rio das Mortes greenstone belt. The suite of accessory minerals associated to the quartz-muscovite and pegmatite stockscheider (columbite-tantalite, cassiterite, gahnite, zircon, xenotime and monazite) are similar to those determined for the pegmatites of the province. The mineralogy of inclusions (Pb-tantalite, microlite, Pb-microlite, U-microlite, Ba-microlite, Hf-rich zircon) in the Fe-columbite associated to the stockscheider is similar to those determined for the Fe-columbite of the more evolved pegmatites found in the province. The quartz-muscovite and pegmatite stockscheider are related to Ritápolis granitoid with is related to the other pegmatites of São João del Rei Pegmatite Province. The proposed mechanism for the formation of clusters of muscovite-quartz and pegmatitic stockscheider is the crystallization of pockets of tardi-magmatic and pos-magmatic hydrothermal - metasomatic fluids segregated from the parental granitic magma and injected into fractures parallel to the roof contact of the granitoid dome.
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Halperin, Charles J. « “Scratch a Russian, Find a Turk” ». Russian History 45, no 4 (27 novembre 2018) : 367–77. http://dx.doi.org/10.1163/18763316-04504004.

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In this first-rate monograph, Cornelia Soldat confirms earlier impressionistic assertions that the portrayal of Ivan iv as a tyrant and the Muscovites as barbarians in German-language pamphlets (Flugschriften) written as propaganda during the Livonian War (1558–1582), are simply projections onto the Muscovite discourse of the motifs of the anti-Ottoman discourse that originated in the fifteenth century after the fall of Constantinople in 1453. Therefore the pamphlets have no value whatsoever for the study of sixteenth- and seventeenth-century Muscovite history. These conclusions have wider significance for the interpretation of the historical reliability of two other source genres beyond the scope of Soldat’s monograph, Livonian chronicles and defector German travel accounts written by Germans who served Ivan iv but then fled Muscovy to write scurrilous denunciations of him as a tyrant.
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Brown, Peter B. « Muscovite Arithmetic in Seventeenth-Century Russian Civilization : Is It Not Time to Discard the “Backwardness” Label ? » Russian History 39, no 4 (2012) : 393–459. http://dx.doi.org/10.1163/48763316-03904001.

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Muscovite civilization utilized Byzantine-Greek alphanumerals for its mathematical symbols. Occasionally derided by historians for being retrograde in comparison to the Hindu-Arabic numerals sixteenth- and seventeenth-century Europe adopted, Muscovy’s alphanumerals were versatile and suitably contoured to perform a variety of computational tasks. Muscovite alphanumerals were an integral part of early Moderen Russia’s administrative culture, and played a prominent role in fostering the experiential knowledge underlying the educational achievements of the Imperial Period. Though they lacked the zero and the decimal, Muscovites still had a reasonable grasp of the base-ten system, and comprehended well basic arithmetical skills and relationship properties, less so equational ones. The Russians developed complex abaci well suited for commercial transactions, large-scale construction, military inventories and payrolls, and the land registry, to name a few. These instruments manipulated an extensive variety of weights, measures, linear distances, area dimensions, volume measurements, and currency. Muscovite arithmetic was a prominent factor assisting in the advancement of critical thinking skills in 1600’s Russia. Nonetheless, as the seventeenth century wore on, sociological, educational or pedagogical, military scientific, administrative, and cultural arguments or interactive phenomena came to bear and increasingly found the Muscovite algorithmic symbols wanting. In 1699 the government decreed that Hindu-Arabic numerals henceforth were to be used in official documents throughout the country. Directly and indirectly, the complex thought processes bound up when operating with Muscovite alphanumerals were one impetus for the further unfolding of Russian civilization after 1700.
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Ružička, Peter, Pavol Myšľan et Sergii Kurylo. « Minerálne zloženie metapelitovej a metapyroklastickej zložky kryštalických vápencov z lokalít Lubeník a Ochtiná (Slovenská republika) ». Bulletin Mineralogie Petrologie 28, no 2 (2020) : 281–89. http://dx.doi.org/10.46861/bmp.28.281.

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Crystalline limestones from the localities Lubeník and Ochtiná (Slovak Republic) have been formed by recrystallization of limestones enriched by basaltic tuffogenic material and a minor pelitic component. The regional metamorphism and tectonic activity associated with Alpine orogennesis resulted in origin of various color and textural varieties of crystalline limestones. The recrystallized tuffogene-pelitic material was transformed into the laminar arrangement in crystalline limestones. The original clay-like pelitic component has probably been entirely recrystallized into muscovite. Higher contents of Fe (0.286 - 0.302 apfu) and Mg (0.342 - 0.396 apfu) are present in muscovites from Lubeník compared to those from Ochtiná. Recrystallized tuffogenic material is represented by epidote, titanite, magnetite and fluorapatite inclusions in muscovites. Quartz and albite form part of a calcite matrix in the crystalline limestones.
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Selin, Adrian Aleksandrovich. « «Expelled from Livonia» : Towards the issue of the arrangement of landowners of «Old» and «New German towns» after the Plyussa Treaty 1583 ». Studia Slavica et Balcanica Petropolitana, no 2 (28) (2020) : 24–35. http://dx.doi.org/10.21638/spbu19.2020.202.

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History of Muscovite estate shaping in “German towns” in 1550s–1580s is closely connected with Novgorod, Pskov, Rzheva Pustaya as servicemen communities. These servicemen were the source for new landowners in the lands taken by Muscovites to the West from Narova river. Only Rzheva Pustaya was more or less studied already. The paper is an attempt to generalize the data on number and personal content of “German towns” landowners (mostly on sources of 1582) and to study the issue of the significance of the experience of making estates in Livonian lands for the day-to-day culture of Muscovite servicemen. Geography of Russian landownership in Livonia is under consideration. Also the historiographical discussions of the reasons of Russian Livonia project fail is studied in the article. Special attention is paid to the issue of Muscovite landowners evacuation from Livonia after military defeats of 1580–1582. Record books of Rzheva Pustaya and Novgorod Vodskaya pyatina included notes of the towns and districts in Livonia that have been left by the landowners. Other record books of North-Western Muscovy only mention the new strata of servicemen “new landowners of German towns”. Special groups of “Rugodiv and Juryev newly baptized [tartars]” and “Cossacks from Govye” were also separately mentioned in the record books. In the last period of Livonian War not only Livonia itself but also some border districts of former Novgorod land were left by Muscovites. In 1582–1583 the Moscow Government also took responsibility for the landowners from that lost districts. V. A. Arakcheev noted the order on the land security of those servicemen issued between January 23 and March 4, 1583. In early 1580s the landowners of “German towns” received estates in “abandoned lands”. Later Court lands were spread between them.
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Halperin, Charles J. « Ivan IV and the Tatars ». Golden Horde Review 9, no 1 (29 mars 2021) : 188–200. http://dx.doi.org/10.22378/2313-6197.2021-9-1.188-200.

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Research objectives: To provide a comprehensive overview of Muscovite interaction with Tatars during Ivan IV’s reign, both with each successor state of the Jochid ulus and with Tatars who moved to Muscovy and entered Ivan IV’s service. Research materials: This study is based upon Russian sources from the reign of Ivan IV concerning the Tatars, including narratives such as chronicles and documentary evidence such as diplomatic reports. Results and novelty of the research: Muscovite policy toward the Tatars did not derive from a single dominating motive, neither hostility, such as religious animosity toward Muslims or the drive for imperial territorial expansion, nor the desire to cooperate with Tatars for the sake of commerce or the need for steppe military allies. Ivan adapted his policies to individual circumstances, vassal puppet rulers or outright conquest as needed. Tatars from the vassal khanate of Kasimov helped Ivan conquer Kazan’ and Astrakhan’ and fight Crimea. Nogai merchants sold the Muscovite army horses. Muscovites possessed intimate knowledge of foreign Tatars, but also lived in close proximity to “native” Tatars who lived on Muscovite soil or traveled to Moscow as envoys or merchants. However expertise on the Tatars, borrowing Tatar institutions, enrolling Tatar servitors, and conquering successor states of the Golden Horde did not make Muscovy a successor state of the Golden Horde. Nevertheless the Tatars were a fact of life in Ivan IV’s Muscovy, as both allies and enemies.
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Thèses sur le sujet "Muscoviti"

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LIBERATO. « Stratigraphic, sedimentological and provenance study on the Permian-Triassic sequences of southern Gondwana : comparison between Victoria Land (Antarctica) and Tasmania and paleoenvironmental implications ». Doctoral thesis, Università di Siena, 2020. http://hdl.handle.net/11365/1118448.

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La tesi di dottorato è stata svolta seguendo un approccio multidisciplinare che ha riguardato lo studio stratigrafico-sedimentologico, petrografico e geochimico di depositi fluviali Permo-Triassici affioranti in Terra Vittoria meridionale e settentrionale. Con lo scopo di ottenere e comprendere le varie peculiarità di ogni singola unità deposizionale (Permo-Triassica, affiorante ad Allan Hills, Terra Vittoria meridionale), è stato eseguito uno studio di dettaglio multidisciplinare con diverse tecniche e metodologie analitiche. I risultati prodotti sono stati utilizzati per comparare aree limitrofe come il Morris Basin (zona transizionale tra la TVm e TVs), in modo da poter ricostruire l’evoluzione geologico-stratigrafica. I dati sono presentati nella Tesi nell’ordine seguente: 1) comprensione e ricostruzione geologico-stratigrafica dell’area di interesse ad Allan Hills (Terra Vittoria meridionale, TVm, Antartide) 2) analisi sedimentologica (analisi di facies) 3) analisi composizionale delle arenarie di Allan Hills (TVm) e Morris Basin (TVm-TVs, analisi modale con metodo Gazzi-Dickinson) 4) studio dei minerali pesanti presenti in sezione sottile (Allan Hills e Morris Basin, conteggio per clasti) 5) analisi composizionale dei granati e delle muscoviti detritici di Allan Hills (TVm) 6) geocronologia degli zirconi detritici di Allan Hills (TVm) Nella prima parte del dottorato è stato fondamentale reinterpretare ed elaborare circa 800 metri di colonne stratigrafiche ottenute nella fase di campagna dai ricercatori in Antartide, per comprendere i rapporti stratigrafici e la geologia dell’area (punto 1). La sezione geologica del settore nord-est di Allan Hills mostra un andamento degli strati debolmente inclinati verso N-NE (monoclinale) di una decina di gradi. La successione Permo-Triassica affiora in relativa continuità fatta eccezione per aree con diffuse coperture detritiche-nivali e dicchi Giurassici. Il punto 2 è stato acquisito con uno studio ad alta risoluzione (scala decimetrica) eseguendo un’analisi di facies, al fine di ricostruire i paleoambienti della successione di Allan Hills. Seguendo lo schema classificativo ed interpretativo di Miall (2014), più di una decina di litofacies e associazioni di facies sono state interpretate. Il risultato più rilevante sembrerebbe evidenziare fasi trasgressive nel Permiano medio-superiore e nel Triassico medio-superiore, come probabile risposta a cambiamenti morfo-strutturali bacinali dovuti a fattori tettonici e a possibili cambiamenti climatici (come evidenziato nella Formazione Feather Conglomerate). In seguito, a scala microscopica sono state caratterizzate in modo quantitativo le arenarie (punti 3 e 4), al fine di poter individuare differenti petrofacies suddivise per unità formazionali. Differenze rilevanti sono state riscontrate tra le arenarie Permiane e quelle Triassiche; in primis una maggiore maturità composizionale dovuta ad un maggiore trasporto (più cicli di sedimentazione) e ad un clima umido con un weathering index intenso al passaggio PTT (Permian-Triassic Transition). Allo stesso modo, lo studio composizionale del granato e della muscovite (punto 5) sembra evidenziare un maggiore grado metamorfico di provenienza, nel Permiano medio-superiore (Formazione della Weller Coal Measures) e Triassico medio-superiore (Formazione della Lashly), rispetto al Triassico inferiore (Feather Conglomerate). In quest’ultima infatti, le muscoviti sono meno ricche in fengite ed i granati diminuiscono drasticamente (nessun dato composizionale). Questo fenomeno indica probabilmente un repentino cambiamento climatico a favore dell’alterazione. Questo approccio è stato di aiuto nel definire ulteriormente le differenze tra le unità Permiane e Triassiche e le loro provenienze. Con lo stesso scopo, sono state effettuate le datazioni su zirconi detritici di Allan Hills (TVm, punto 6). Tre aspetti fondamentali ne risultano: - nei sedimenti Permiani lo spettro di età è più ampio e si hanno buone percentuali in tutti i range, variabili dal Devoniano all’Archeano. Picchi di età “greenvilliana” sono da evidenziare mentre non sono presenti zirconi Permo-Triassici. - Gli zirconi detritici del Triassico inferiore hanno origine principalmente dall’Orogene di Ross, mostrando forse un unroofing regionale. Con un picco minore, ma pur sempre evidente, ci sono età “greenvilliane”. - Nel Triassico medio-superiore si registra l’attività vulcanica Permo-Triassica del margine meridionale del Gondwana. Sembra evidente come il bacino della Terra Vittoria meridionale fosse, durante il Permiano, morfologicamente separato dal bacino contiguo nelle Central Transantarctic Mountains (CTM). Un processo di cattura fluviale, probabilmente da porsi alla transizione tra il Permiano superiore ed il Triassico inferiore, potrebbe spiegare sia lo spettro composizionale che di età degli zirconi. Una volta ottenuto un quadro completo di ogni singola unità stratigrafica, è stata effettuata una prima comparazione litologico-petrografica con una parte significativa di campioni arenacei sparsi per la Terra Vittoria (Morris Basin e Terra Vittoria settentrionale). Con la missione in Tasmania (febbraio 2019), è stato possibile confrontare in modo preliminare le arenarie delle successioni Tasmane coeve a quelle antartiche. Granulometricamente più fini di quelle del Victoria Group, mostrano rapporti sabbia/fango in alcuni casi confrontabili (dal Triassico inferiore al superiore). Il PTT sembra collocarsi tra superfici di discordanza semplice meno erosivi a sud rispetto al settore nord-nord-est del bacino Tasmano. Questo potrebbe essere attribuito ad una estrema variabilità degli ambienti sedimentari paleozoici e dei processi deposizionali e tettonici. Si rinvengono spessori ingenti di livelli di siltiti argillose rossastre (paleosuoli) con spessori molto variabili. Al contrario, dai dati di questo studio, il PTT ad Allan Hills potrebbe connotarsi per avere caratteri transizionali o di paraconcordanza. Il confronto geologico tra macroregioni diverse e distanti, Terra Vittoria settentrionale e meridionale (TVs TVm), è stato anche rafforzato grazie allo studio analitico di tesi e articoli prodotti negli anni precedenti da altri studiosi. I risultati più importanti provengono dall’analisi di facies e dalle composizioni mineralogiche: - Tutte le petrofacies del Morris Basin sono correlabili con quelle di Allan Hills (TVm) - Una parte dei depositi del Permiano nel bacino della TVs sembra contenere più litici plutonici e metamorfici (circa 5%) rispetto a successioni analoghe ad Allan Hills ed in Terra Vittoria meridionale in generale. - La litostratigrafia di Thern Promontory (TVs) sembra affine, in termini di facies e petrofacies, ad una fase post-glaciale Permiana, come evidenziano alcuni dati in TVm, anche se con spessori notevolmente ridotti. - Le arenarie di Stewart Heights (TVs) e di Pudding Butte (Morris Basin) hanno caratteri sedimentologici e petrologici comparabili con quelle del Triassico inferiore ad Allan Hills (TVm). - Nella Section peak Fm. (simil-Lashly Fm) sono composizionalmente litareniti e litareniti feldspatiche come quelle della SVL. - I bacini della TVs e TVm, in un periodo compreso tra il Triassico medio-Giurassico inferiore, registrano la comparsa di litici vulcanici lavici (Formazioni di Section Peak e Lashly). - Anche per i granati e le miche detritiche triassiche le composizioni sono correlabili tra la TVs e TVm. In conclusione, il presente studio pone nuovi vincoli petro-stratigrafici e paleogeografici in Terra Vittoria meridionale e settentrionale, in quello che era il paleomargine meridionale del Gondwana. In particolare, lo studio sedimentologico e di provenienza dei sopracitati depositi ha consentito di produrre ed apportare una grande mole di nuovi dati, la cui elaborazione consente di evidenziare una storia geologica evolutiva ben più articolata e complessa di quella conosciuta.
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Mayhew, Nick. « Marriage and brotherhood in Muscovite Russia ». Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275349.

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In Russia today, conservative views about gender are often promoted through reference to the past, to show that supposedly ‘traditional’ gender roles are intrinsic to Russian history. Frequently, this idea is upheld in scholarship. My work explores the historicity of commonly held assumptions about gender. This dissertation focusses on gender and sexuality in Russia from the sixteenth to early eighteenth centuries. It shows that ideas about what constituted a virtuous marriage were established by reference to ideas about brotherhood. Brotherhood here refers not to biological siblings, but to a church rite of ‘spiritual brotherhood’ known in Russian as bratotvorenie. This rite has not been studied in any depth before. Based on archival work, this dissertation offers a detailed account of the tradition in Russia until its ban in 1650, when it was prohibited by leading ecclesiastical figures for being too like marriage. One churchman complained: ‘The priest, joining together these two men, unites them in matrimony’. The dissertation shows that bratotvorenie was conceived of in premodern Russia as a form of same-sex union, and that it was through banning this tradition that churchmen came to express in a coherent way which kinds of partnership were legitimate and why. The first chapter challenges the idea that marriage was always a monogamous union between a man and a woman for the creation of children, an idea that is often encountered in academic literature on Russian marriage history. It shows that the church rite of marriage was edited in Russia during the sixteenth and seventeenth centuries, when ideas about the sacramental nature of marriage changed. The second chapter builds on these observations, suggesting that marriage and ‘spiritual brotherhood’ were understood as analogous in the premodern period. The final two chapters look at depictions of marriage and brotherhood in hagiography and iconography respectively. They focus on Petr and Fevroniia, the first married couple to be canonised in Russia in 1547. In 2008, their feast day was reworked into a state festival called the ‘Day of Family, Love and Fidelity’, now widely celebrated across Russia. Petr and Fevroniia have been cast as the patron saints of so-called ‘traditional moral-spiritual values’. This view is generally upheld in existent scholarship on the saints. This dissertation responds to the way the saints are being represented today, arguing that they were initially venerated for subverting normative ideas about gender and sexuality—that they were queer. What is more, their veneration paralleled the veneration of holy brothers. Their hagiography seems to have been based on the Life of a monastic brotherhood, and icons depicting Petr and Fevroniia standardly showed them in monastic robes. Focussing on marriage and brotherhood in premodern Russia, each chapter of this dissertation challenges a preconceived idea about the immutability of supposedly ‘traditional’ gender roles in Russian history.
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Lixandrão, Filho Arnaldo Luis 1983. « Estudos de "annealing" de traços de íons e traços de fissão em muscovita ». [s.n.], 2016. http://repositorio.unicamp.br/jspui/handle/REPOSIP/330569.

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Orientador: Sandro Guedes de Oliveira
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin
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Resumo: O trabalho consistiu em estudar a muscovita como termocronômetro. Por ter pequena quantidade de urânio, abaixo de 5 partes por milhão, a utilização direta é inviável. Dessa forma, irradiamos placas de muscovita com íons de $^{238}U$ moderados por folhas de alumínio (resultando em diferentes energias) e com diferentes ângulos de incidência, com a finalidade de analisar o comportamento da muscovita com traços de íons e também para que esses íons criassem canais com o objetivo de revelar maior quantidade de traços fósseis. Realizamos planejamento utilizando algorítimo D-ótimo para realizar tratamentos térmicos com diferentes tempos e temperaturas, a fim de obter dados de ''annealing'' para a muscovita. Medimos o comprimento dos traços de íons projetados com as seguintes dependências: massa do íon, tempo de ''annealing'', temperatura de ''annealing'', energia de incidência e ângulo de incidência. Os parâmetros energia de incidência, ângulo de incidência e características do íon, não são considerados em nenhum dos modelos disponíveis na literatura. Assim sendo, formulamos um novo modelo empírico para a cinética de ''annealing'': $l = l_0 + a*energia - e^{\left(\frac{temperatura}{b + c*log(tempo)}\right)}$, $l$ sendo comprimento do traço com ''annealing'' e $l_0$ o comprimento sem ''annealing'' e, as constantes $a$, $b$ e $c$ ajustadas a partir dos dados experimentais. As constantes $a$ e $L_0$ são as variáveis relativas ao ângulo de incidência, tipo do íon e energia. Este modelo, além de ter um número menor de parâmetros, com uma simples modificação, $\frac{L}{L_0} = 1 + A.e^{\frac{T}{b}},\ b = B+C.ln(t)$, pode ser aplicado também para traços de fissão confinados. Nesse caso são apenas 3 parâmetros, $A$, $B$ e $C$ e o modelo ajustado possibilita a análise térmica em qualquer mineral que possuir dados experimentais. Neste trabalho mostramos o ajuste para os seguintes minerais: apatita, zircão, epídoto e muscovita. A partir dos traços de íons que sofreram ''annealing'' conseguimos ajustar parâmetros e obtivemos resultados consistentes com trabalhos anteriores. Um deles foi a previsão de \citeauthor{Bigazzi1967} que, possivelmente, utilizou amostras de superfície à 303K. Com esse resultado, validamos que traços de íons podem gerar bons resultados no estudo de ''annealing'' em laboratório e em tempos geológicos. Por fim, desenvolvemos um aplicativo que contempla: o ajuste dos parâmetros do modelo aos dados experimentais de modo automático, a obtenção de índices térmicos (temperatura de fechamento e zona de ''annealing parcial'') independente do mineral e a reconstrução de histórias térmicas para múltiplos minerais a partir de vínculos geológicos, da idade e de uma lista de comprimento de traços confinados. Além dessas características, a inédita ferramenta utiliza interface ''web'' que pode ser utilizada em qualquer plataforma e sistema operacional. Por fim, os resultados significativos foram: novos dados de ''annealing'' de traços de íons em mica muscovita, novo modelo empírico para abordar a cinética do ''annealing'' para traços de íons ou fissão e um aplicativo para tratamento de dados, ajuste, obtenção de índices térmicos e histórias térmicas
Abstract: In this work we studied muscovite as a thermocronometer. Muscovite have low amount of uranium, below 5 parts per million. Because of that it is impractical to be used as thermocronometer. Thus irradiating it with swift heavy ions of $ ^ {238} U $, moderated by aluminum foil (resulting in different energies) and with different angles of incidence is one way to analyze the behavior of muscovite ion tracks. These tracks can act like channels to the acid, chemical etching, revealing more fossil traces. We carry out experimental planning using D-optimal algorithm do thermal treatments at different times and temperatures in order anneal muscovite tracks. We measured the length of the ion tracks created with the following dependencies: ion mass, annealing time and temperature, impact energy and angle of incidence. The incidence of energy parameters, angle of incidence and ion characteristics are not considered in any of the models available in the literature. Therefore, we have developed a new empirical model for the kinetics of annealing: $l = l_0 + a*energia - e^{\left(\frac{temperatura}{b + c*log(tempo)}\right)}$, $l$ annealed fission track length and $l_0$ fission track length and the constants $a$, $b$ and $c$ adjusted from the experimental data . The constants $a$ and $L_0$ are related to the angle of incidence, type of ion and energy. This model, besides having fewer parameters, with a simple modification, $\frac{L}{L_0} = 1 + A.e^{\frac{T}{b}},\ b = B+C.ln(t)$ may also be applied to confined fission tracks. The adjusted model , with only 3 parameters, $A$, $B$ and $C$, enables thermal analysis in any mineral that has experimental data. We show fitting for the following minerals: apatite, zircon, epidote and muscovite. From the annealed ion tracks we fit the data to get all parameters and obtained results consistent with previous work. One was that we predict that \citeauthor{Bigazzi1967}, possibly, used surface samples with 303 K. With this result, we validate that ions tracks can generate good results using annealing laboratory data extrapolated to geological time. Finally, we developed an application with the following features: automatic model fitting to experimental data, simulation of thermal index (closure temperature and partial annealing) independent of the mineral and the reconstruction of thermal histories for multiple minerals from geological. In addition to these features, the application has web interface and can be used on any platform and operating system. Finally, the most significant results of this work were: new experimental annealing data of ion tracks in muscovite, new empirical model to increase the knowledge of the ion or fission tracks annealing kinetics and an application for data processing, fit and simulation of thermal index and thermal histories reconstruction
Mestrado
Física
Mestre em Física
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Davis, Laura E. « Pegmatitic muscovites : effect of composition on optical and lattice parameters ». Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/50066.

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Twenty-five muscovites have been systematically studied chemically, optically, and structurally. Multiple linear regressions were performed on these data to determine the correlations of the compositional components with both the optical properties and the unit cell parameters. The results of this study indicate refractive indices increase to the extent Fe and Ti constitute the octahedral cations, and to the extent OH rather than F coordinates to these cations. The optic angle 2VX decreases nearly linearly with the Ti content. The b cell edge follows a near-linear trend with ∑(Mg + Fe(total)), similar to that found by Guidotti (1984).
Master of Science
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Zhukova, Tatyana Alexandra. « The gift-giving culture of Anglo-Muscovite diplomacy, 1566-1623 ». Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/55471/.

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In 1589, the government of Tsar Feodor I of Muscovy returned the gift of golden medals received from Queen Elizabeth I, describing the offending objects as neither commendable nor agreeable. The rejection was accompanied with opprobrious public speeches about the gift's unsuitability and a threat to transfer Muscovite favour unto other European nations if Elizabeth offered no immediate redress. In her defence, Elizabeth argued that diplomatic gifts were to be accepted not in respect of the object itself, but of the royal majesty from whom it was presented. While the episode appears to show a petty squabble over material trinkets, its diplomatic repercussions were significant as the following five years would be dedicated to the repair of Anglo-Muscovite relations. Clearly, gifts were integral to the mechanics of early modern diplomacy. This thesis explores an intriguing, but as yet scarcely studied, facet of diplomatic history: the operation of Muscovite diplomacy prior to the reign of Peter the Great. It focuses on Muscovy's long-term relations with England (Muscovy's first continual diplomatic relationship with a Western European power in the sixteenth century) and examines the exchange of sovereign gifts between the two royal courts. The principal novelty of this research lies in its departure from the anthropological definition of the gift as a 'material' object, instead it argues that non-tangible components, such as royal favours, were also 'gifts', provided they were given willingly, were reciprocated− if not necessarily symmetrically, and created emotional, political and social bonds between the participants. As an example of such intangible gift, this thesis uses the Muscovite zhalovannaia gramota (a charter of mercantile privileges). In this way, the research explores the full range and complexity of diplomatic gift-exchange between the two monarchies in a crucial period of dynastic change in both countries. Frequently, gift-giving is interpreted as either a means of intercultural communication par excellence or, in the case of a rejected gift, as evidence of an inevitable clash of cultures. This thesis, however, demonstrates that diplomatic gift-exchange was a multi-faceted process. Royal intentions were complex and, therefore, required different levels of engagement; their transmission was reliant upon intermediaries (ambassadors), and the reception of gifts was intrinsically linked to diplomatic aims. Secondly, in contrast to the widespread assumption that the diplomatic cultures of England and Muscovy were discordant, day-to-day diplomatic exchanges (including gift-giving) drew the Tsars into a shared ceremonial arena, where other rulers competed for the symbolic resources of sovereignty. The exchange of gifts between the two states facilitated the process of gradual integration of the apparently alien Muscovite Tsar into the English (and essentially European) standardised codes of diplomatic behaviour and ceremonial communication. It was not until the reign of Peter I, however, that the Tsars fully became prominent members of the European society of princes. Diplomatic practice was neither universal nor culturally specific; such assumptions are obstructive to a better understanding of the mechanics of cross-cultural interactions. Ultimately, diplomatic ceremony and gift-giving were driven by notions of sovereign honour and the symbolic language of the court society, and not by political, national or cultural incommensurability. Thus, the foundations of Muscovy's gradual integration into European codes of diplomatic behaviour can be traced to the reign of Ivan IV, and specifically, to the continuous Muscovite diplomatic relationship with the English Crown.
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Tshering, Peldon. « Detrital muscovite thermochronology in two drainage basins in western Bhutan ». Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39008.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2007.
Includes bibliographical references (leaves [34]-38).
New reconnaissance data for a poorly characterized area in the western Bhutan Himalaya show distinction between the 40Ar/39Ar cooling age distributions of detrital minerals in the two river catchments of the Punatsang chu and the Wang chu. Muscovites from five samples of Wang chu river sands yield ages (corresponding roughly to the time of bedrock cooling through a temperature of ca.350°C) between 9.37± 0.08 Ma and 13.98 ± 0.08 Ma. The majority of ages are less than 13 Ma, and the data for all samples have a unimodal distribution with an average age of ca. 11.4 ± 1.5 Ma. In contrast, muscovites from 14 Punatsang chu samples yield ages with nearly the same total range but with a distinctively multi-modal distribution. Two modes predominate in the Punatsang chu data: one at ca. 11.4 Ma, which is statistically indistinguishable from the single mode of the Wang chu data, and one at ca. 14.5 Ma. The full explanation for this distribution must await further bedrock and detrital dating studies, but one hypothesis is that the out-of-sequence Kakhtang thrust fault system - which is thought to transect the upper reaches of the river catchments - has juxtaposed two bedrock terrains with different cooling histories.
(cont.) A second possibility is that the younger mode of cooling ages is related to uplift of the footwall of the Chomolhari fault system, which includes the major bounding structures of the Yadong-Gulu rift northwest of the catchments. Exactly why the older mode of ages is not found in the Wang chu dataset is unclear. If the first of the above hypotheses is correct, the lack of an older mode in the Wang chu dataset may mean that the muscovites in the Wang chu fluvial sediments were derived exclusively from the Kakhtang thrust system hanging wall. If the second hypothesis is correct, the muscovites may have been derived exclusively from the Chomolhari fault system footwall. However, since we do not know the actual distribution of muscovites in the Wang chu catchment and we do not know that modern erosion is uniform in the catchment, it is also possible that the older mode is simply missing as an artifact not-uniform sampling. Again, more studies are needed to evaluate these alternative explanations.
by Peldon Tshering.
S.M.
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Gridi-Bennadji, Fayza. « Matériaux de mullite à microstructure organisée composés d'assemblage muscovite-kaolinite ». Limoges, 2007. https://aurore.unilim.fr/theses/nxfile/default/0475a8c9-501a-4ac2-bdac-9d95eeaa3b66/blobholder:0/2007LIMO4033.pdf.

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Des matériaux de mullite à microstructure organisée sont réalisés à partir d'assemblages des minéraux muscovite et kaolinite. L'étude par diffraction Rx et de neutrons de la muscovite montre l'effet de la température sur la réduction de l'organisation structurale, alors que l'arrangement en feuillets et l'alignement préférentiel des unités structurales dans les 3 directions de cristallisation sont maintenus jusqu'à 1095°C. La croissance organisée de grands cristaux de mullite est favorisée par un phénomène d'épitaxie. L'étude de la cinétique des transformations thermiques et du processus d'exfoliation de la muscovite ainsi que du cycle de frittage permettent d'obtenir des substrats de 500µm d'épaisseur. Les corrélations entre la microstructure et les propriétés mécaniques montrent la possibilité d'obtention de matériaux dont la résistance mécanique et la ténacité sont élevées en comparaison de celles des matériaux de composition similaire
Micro-composite materials with an organized microstructure with mullite are formed from assemblages of muscovite and kaolinite minerals. Rx diffraction and neutron studies of muscovite point to the temperature effect on the reduction of the structural organization, while sheet arrangements and preferential orientations of structural units in the 3 directions of mullite crystals are maintained up to 1095°C. These behaviors favor the organized growth of large mullite crystals by epitaxy on the high-temperature form of muscovite. The study of the kinetics of thermal transformations and of the exfoliation process of muscovite leads to the optimization of the sintering process of substrates with a thickness of 500µm. The study of correlations between microstructure and mechanical properties leads to the optimization of materials with a higher strength and fracture toughness, in comparison with the behavior of similar materials
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Nana, Koumtoudji Lecomte Gisèle Laure. « Transformations thermiques, organisation structurale et frittage des composés kaolinite-muscovite ». Limoges, 2004. http://aurore.unilim.fr/theses/nxfile/default/1f887c04-ebcd-4780-a15c-aee018af90f2/blobholder:0/2004LIMO0034.pdf.

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Les argiles les plus utilisées pour l'élaboration des céramiques de grande diffusion ont des teneurs élevées en minéraux du groupe de la kaolinite et des micas. Pour étudier les propriétés d'usage de ces argiles dans les matériaux céramiques, nous avons analysé les transformations thermiques et structurales ainsi que le processus frittage de composés kaolinite-muscovite. Leurs teneurs en muscovite sont inférieures à 25% de la masse totale. Le comportement idéal des composés s'insère dans le diagramme ternaire Al2O3-SiO2-K2O, dans une zone non étudiée. Nous proposons une étude expérimentale et une modélisation de deux sections verticales de ce diagramme, qui décrivent les composés kaolinite-muscovite. Il est ainsi montré l'existence d'un domaine d'immiscibilité sur la section reliant le point eutectique à 985°C au point de composition de la mullite, susceptible d'être le prolongement dans le ternaire de la lacune de miscibilité mise en évidence autour du point de composition de la kaolinite dans le diagramme binaire Al2O3-SiO2. Le comportement global est aussi caractérisé par l'analyse des transformations thermiques. On observe notamment que jusqu'à 900°C, la kaolinite et la muscovite évoluent sans interaction. Dès 925°C, la diffusion du potassium a pour effet de modifier les processus de réorganisation structurale de la métakaolinite. Le phénomène exothermique à 980°C s'en trouve fortement diminuer. Vers 1140°C le pic caractéristique de la réaction péritectique reste invariable et proportionnel à la quantité de muscovite réagissante, tandis que l'épaulement exothermique lié à cristallisation de la cristobalite et de la mullite secondaire est décalé vers les basses températures en présence de muscovite. La croissance de la mullite à l'interface kaolinite-muscovite a été étudiée par diffraction des rayons X et par l'analyse des fonctions de distribution de paires atomiques. Les résultats montrent des orientations systématiques des cristallites de mullite, suivant les directions (010), (310) et () de la muscovite. La croissance préférentielle de la mullite à l'interface des minéraux a pu être expliquée par une relation d'épitaxie entre les phases haute température des phyllosilicates. L'utilisation des modèles de frittage existant dans la littérature se heurte à la complexité des transformations des composés de phyllosilicates et de leurs morphologies particulières. Néanmoins, nous montrons l'existence de trois mécanismes principaux qui contrôlent la densification des composés : le frittage par flux visqueux, le frittage par diffusion aux joints de grains et le frittage avec phase liquide. Cette étude a permis de mettre en évidence les interactions mutuelles entre les minéraux kaolinite et muscovite. Les transformations structurales et microstructurales qui résultent de traitements thermiques appropriés doivent permettre de réaliser des matériaux céramiques dont la microstructure est organisée. Nous avons aussi contribué à la compréhension des mécanismes de frittage de mélanges complexes de phyllosilicates. L'apport de ces résultats est favorable à l'industrie céramique, notamment en ce qui concerne la production des matériaux de grande diffusion
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Gruber, Isaiah. « The Muscovite embassy of 1599 to Emperor Rudolf II of Habsburg ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0022/MQ50518.pdf.

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Roland, Patrick. « Contribution à l'étude du broyage des amiantes et du mica muscovite ». Mulhouse, 1986. http://www.theses.fr/1986MULH0014.

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Etude de l'influence du milieu liquide dans lequel est opéré le broyage (aqueux ou organique). Dans le cas de la muscovite, au comportement beaucoup plus complexe que celui de l'amiante, on met en évidence l'influence non seulement du milieu liquide mais aussi de la présence d'ions ou d'autres réactifs ajoutés en faibles quantités. L'ensemble des résultats s'explique en postulant l'existence d'un film d'eau aux propriétés particulières, en surface, des minéraux étudiés
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Livres sur le sujet "Muscoviti"

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Explorations in Muscovite history. Hampshire, Great Britain : Variorum, 1991.

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Hughes, Lindsey, dir. New Perspectives on Muscovite History. London : Palgrave Macmillan UK, 1993. http://dx.doi.org/10.1007/978-1-349-22428-9.

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Monier, Gilles. Cristallochimie des micas des leucogranites : Nouvelles données expérimentales et applications pétrologiques. Vandœuvre-les-Nancy, France : Centre de recherches sur la géologie de l'uranium, 1987.

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Russia. The Muscovite Law Code (Ulozhenie) of 1649. Irvine, Calif. (P.O. Box 5001, Irvine, 92716-5001) : C. Schlacks Jr., 1988.

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Muzhik and Muscovite : Urbanization in late imperial Russia. Berkeley : University of California Press, 1985.

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Bradley, Joseph. Muzhik and Muscovite : Urbanization in late imperial Russia. Berkeley : University of California Press, 1985.

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Pontifical Institute of Mediaeval Studies. et Gosudarstvennyĭ istoricheskiĭ muzeĭ (Moscow, Russia)., dir. The Volokolamsk paterikon : A window on a Muscovite monastery. Toronto : Pontifical Institute of Mediaeval Studies, 2008.

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Croskey, Robert M. Muscovite diplomatic practice in the reign of Ivan III. New York : Garland Pub., 1987.

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Alef, Gustave. The origins of Muscovite autocracy : The age of Ivan III. Berlin : Osteuropa-Institut, 1986.

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Tolstoĭ, Petr Andreevich. The travel diary of Peter Tolstoi : A Muscovite in early modern Europe. DeKalb : Northern Illinois University Press, 1987.

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Chapitres de livres sur le sujet "Muscoviti"

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Gooch, Jan W. « Muscovite ». Dans Encyclopedic Dictionary of Polymers, 476. New York, NY : Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7747.

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Baron, Samuel. « B.A. Rybakov on the Jenkinson Map of 1562 ». Dans New Perspectives on Muscovite History, 3–13. London : Palgrave Macmillan UK, 1993. http://dx.doi.org/10.1007/978-1-349-22428-9_1.

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Stevens, Carol B. « Solvency and Service Status : The Impact of Military Reform, 1678–1682 ». Dans New Perspectives on Muscovite History, 156–73. London : Palgrave Macmillan UK, 1993. http://dx.doi.org/10.1007/978-1-349-22428-9_10.

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Hughes, Lindsey. « Russia in 1689 : Court Politics in Foy de la Neuville’s Relation curieuse et nouvelle de Moscovie ». Dans New Perspectives on Muscovite History, 177–87. London : Palgrave Macmillan UK, 1993. http://dx.doi.org/10.1007/978-1-349-22428-9_11.

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Polevoi, Boris P. « Concerning the Origin of the Maps of Russia of 1613–1614 of Hessel Gerritsz ». Dans New Perspectives on Muscovite History, 14–23. London : Palgrave Macmillan UK, 1993. http://dx.doi.org/10.1007/978-1-349-22428-9_2.

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Urness, Carol. « Rybakov on the Delisle Map of 1706 ». Dans New Perspectives on Muscovite History, 24–34. London : Palgrave Macmillan UK, 1993. http://dx.doi.org/10.1007/978-1-349-22428-9_3.

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Birnbaum, Henrik. « Did the 1478 Annexation of Novgorod by Muscovy Fundamentally Change the Course of Russian History ? » Dans New Perspectives on Muscovite History, 37–50. London : Palgrave Macmillan UK, 1993. http://dx.doi.org/10.1007/978-1-349-22428-9_4.

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Pickhan, Gertrud. « The Incorporation of Gospodin Pskov into the Muscovite State ». Dans New Perspectives on Muscovite History, 51–58. London : Palgrave Macmillan UK, 1993. http://dx.doi.org/10.1007/978-1-349-22428-9_5.

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Skrynnikov, Ruslan G. « The Civil War in Russia at the Beginning of the Seventeenth Century (1603–1607) : Its Character and Motive Forces ». Dans New Perspectives on Muscovite History, 61–79. London : Palgrave Macmillan UK, 1993. http://dx.doi.org/10.1007/978-1-349-22428-9_6.

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Graham, Hugh F. « Further Sources for the Rule of False Dmitrii I ». Dans New Perspectives on Muscovite History, 80–97. London : Palgrave Macmillan UK, 1993. http://dx.doi.org/10.1007/978-1-349-22428-9_7.

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Actes de conférences sur le sujet "Muscoviti"

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Kaur, Navjeet, Lakhwant Singh, Mohan Singh, A. M. Awasthi et Jitender Kumar. « Dielectric relaxation characteristics of muscovite mica ». Dans SOLID STATE PHYSICS : Proceedings of the 58th DAE Solid State Physics Symposium 2013. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4872707.

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Fali, Alireza, Sampath Gamage, Marquez Howard, Kirill Bolotin et Yohannes Abate. « Nanoimaging and Nano-FTIR of Muscovite Mica ». Dans 2018 IEEE Research and Applications of Photonics In Defense Conference (RAPID). IEEE, 2018. http://dx.doi.org/10.1109/rapid.2018.8509013.

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Schabernack, Jonas, Augusto Oliveira, Thomas Heine et Cornelius Fischer. « Site-Specific Europium Adsorption on Muscovite (001) Surfaces ». Dans Goldschmidt2022. France : European Association of Geochemistry, 2022. http://dx.doi.org/10.46427/gold2022.13175.

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Heizler, Matthew, Mark Holland et Sean Long. « Muscovite MDD : In Vacuo Argon Release via Volume Diffusion ». Dans Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.1013.

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Kaur, Sukhnandan, Surinder Singh, Lakhwant Singh et S. P. Lochab. « Thermoluminescence and dielectric response of gamma irradiated muscovite mica ». Dans SOLID STATE PHYSICS : Proceedings of the 58th DAE Solid State Physics Symposium 2013. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4872966.

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Greathouse, Jeffery, Daniel Long, Guangping Xu, Hongkyu Yoon et Katherine Jungjohann. « Molecular-Scale Studies of Surfactant Partitioning on Muscovite Surfaces. » Dans Proposed for presentation at the 57th Annual Clay Minerals Society Meeting held October 19-23, 2020. US DOE, 2020. http://dx.doi.org/10.2172/1824261.

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Paterson, Jason, Andrew J. Shields et Donald M. Hepburn. « Artificial vented void partial discharge degradation of Muscovite mica ». Dans 2012 47th International Universities Power Engineering Conference (UPEC). IEEE, 2012. http://dx.doi.org/10.1109/upec.2012.6398691.

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Wang, Chih-Kuo, Hena-Jui Liu, Dong Su, Do Thi Hien, Ha Thai Duy, Kun-Hong Wu, Yi-Chun Chen et al. « Heteroepitaxial Cof'e2O4/Muscovite Bimorph with Large Magnetostriction for Flexible Electronics ». Dans 2016 International Conference of Asian Union of Magnetics Societies (ICAUMS). IEEE, 2016. http://dx.doi.org/10.1109/icaums.2016.8479704.

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Archilla, J. F. R., J. Cuevas, F. R. Romero, Michio Tokuyama, Irwin Oppenheim et Hideya Nishiyama. « Effect of Breather Existence on Reconstructive Transformations in Mica Muscovite ». Dans COMPLEX SYSTEMS : 5th International Workshop on Complex Systems. AIP, 2008. http://dx.doi.org/10.1063/1.2897904.

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Awasthi, Saurabh, Douglas J. Little, Alex Fuerbach, Chris Marjo, Bill Gong et Deb M. Kane. « Response of natural muscovite to a single femtosecond laser pulse ». Dans Micro + Nano Materials, Devices, and Applications 2019, sous la direction de M. Cather Simpson et Saulius Juodkazis. SPIE, 2019. http://dx.doi.org/10.1117/12.2541140.

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Rapports d'organisations sur le sujet "Muscoviti"

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Shaw, D. R., C. J. Hodgson, C. H. B. Leitch et R. J. W. Turner. Geochemistry of tourmalinite, muscovite, and chlorite-garnet-biotite alteration, Sullivan Zn-Pb Deposit, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/134196.

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Carroll, S., M. Smith et K. Lammers. Chlorite, Biotite, Illite, Muscovite, and Feldspar Dissolution Kinetics at Variable pH and Temperatures up to 280 C. Office of Scientific and Technical Information (OSTI), octobre 2016. http://dx.doi.org/10.2172/1345341.

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Skipton, D. R., M R St-Onge et N. L. Joyce. 40Ar/39Ar biotite, muscovite, and hornblende ages from the Cape Smith belt and Superior Craton, northern Quebec. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2020. http://dx.doi.org/10.4095/322170.

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Powell, J., et D. A. Schneider. Preliminary results of detrital muscovite 40Ar/39Ar geochronology from the eastern Mackenzie Mountains and Mackenzie Plain, Northwest Territories. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2013. http://dx.doi.org/10.4095/292712.

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Kellett, D. A., et P. Iraheta Muniz. Detrital U-Pb zircon and 40Ar/39Ar muscovite geochronology of the Whitehorse Trough, and surrounding rocks, Yukon and British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2019. http://dx.doi.org/10.4095/314694.

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Kellett, D. A., et A. Zagorevski. Overlap assemblages : Laberge Group of the Whitehorse Trough, northern Canadian Cordillera. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/326064.

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The Laberge Group was deposited during the Early to Middle Jurassic in a marginal marine environment, in the northern Canadian Cordillera. It occurs as a narrow, elongated siliciclastic unit along more than 600 km of strike length, overlapping the Intermontane terranes of southern Yukon and northwestern British Columbia. The Laberge Group was deposited on the Late Triassic Stuhini and Lewes River groups, a volcano-plutonic complex of the Stikine terrane (Stikinia), and, locally, the Kutcho Arc. It is overlain by Middle Jurassic to Cretaceous clastic units. The variations in clast composition and detrital zircon populations among these units indicate major changes in depositional environment, basin extent, and sources during the latest Triassic to Middle Jurassic. Detrital zircon populations are dominated by near contemporary Stuhini-Lewes River arc grains, consistent with dissection of an active arc. Detrital rutile and muscovite data show rapid cooling and exhumation of metamorphic rocks during the Early Jurassic. Thermochronological data indicate that basin thermal evolution was domainal, with at least five regional temperature-time histories.
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Specht, Paul Elliott, et Marcia A. Cooper. Thermal Diffusivity and Specific Heat Measurements of Titanium Potassium Perchlorate Titanium Subhydride Potassium Perchlorate 9013 Glass 7052 Glass SB-14 Glass and C-4000 Muscovite Mica Using the Flash Technique. Office of Scientific and Technical Information (OSTI), février 2015. http://dx.doi.org/10.2172/1170406.

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Jacques, I. J., A. J. Anderson et S. G. Nielsen. The geochemistry of thallium and its isotopes in rare-element pegmatites. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328983.

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The Tl isotopic and trace element composition of K-feldspar, mica, pollucite and pyrite from 13 niobium-yttrium-fluorine (NYF)-type and 14 lithium-cesium-tantalum (LCT)-type rare-element pegmatites was investigated. In general, the epsilon-205Tl values for K-feldspar in NYF- and LCT-type pegmatites increases with increasing magmatic fractionation. Both NYF and LCT pegmatites display a wide range in epsilon-205Tl (-4.25 to 9.41), which complicates attempts to characterize source reservoirs. We suggest 205Tl-enrichment during pegmatite crystallization occurs as Tl partitions between the residual melt and a coexisting aqueous fluid or flux-rich silicate liquid. Preferential association of 205Tl with Cl in the immiscible aqueous fluid may influence the isotopic character of the growing pegmatite minerals. Subsolidus alteration of K-feldspar by aqueous fluids, as indicated by the redistribution of Cs in K-feldspar, resulted in epsilon-205Tl values below the crustal average (-2.0 epsilon-205Tl). Such low epsilon-205Tl values in K-feldspar is attributed to preferential removal and transport of 205Tl by Cl-bearing fluids during dissolution and reprecipitation. The combination of thallium isotope and trace element data may be used to examine late-stage processes related to rare-element mineralization in some pegmatites. High epsilon-205Tl and Ga in late-stage muscovite appears to be a favorable indicator of rare-element enrichment LCT pegmatites and may be a useful exploration vector.
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Caritat, P. de, et U. Troitzsch. Towards a regolith mineralogy map of the Australian continent : a feasibility study in the Darling-Curnamona-Delamerian region. Geoscience Australia, 2021. http://dx.doi.org/10.11636/record.2021.035.

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Bulk quantitative mineralogy of regolith is a useful indicator of lithological precursor (protolith), degree of weathering, and soil properties affecting various potential landuse decisions. To date, no national-scale maps of regolith mineralogy are available in Australia. Catchment outlet sediments collected over 80% of the continent as part of the National Geochemical Survey of Australia (NGSA) afford a unique opportunity to rapidly and cost-effectively determine regolith mineralogy using the archived sample material. This report releases mineralogical data and metadata obtained as part of a feasibility study in a selected pilot area for such a national regolith mineralogy database and atlas. The area chosen for this study is within the Darling-Curnamona-Delamerian (DCD) region of southeastern Australia. The DCD region was selected as a ‘deep-dive’ data acquisition and analysis by the Exploration for the Future (2020-2024) federal government initiative managed at Geoscience Australia. One hundred NGSA sites from the DCD region were prepared for X-Ray Diffraction (XRD) analysis, which consisted of qualitative mineral identification of the bulk samples (i.e., ‘major’ minerals), qualitative clay mineral identification of the <2 µm grain-size fraction, and quantitative analysis of both ‘major’ and clay minerals of the bulk sample. The identified mineral phases were quartz, plagioclase, K-feldspar, calcite, dolomite, gypsum, halite, hematite, goethite, rutile, zeolite, amphibole, talc, kaolinite, illite (including muscovite and biotite), palygorskite (including interstratified illite-smectite and vermiculite), smectite (including interstratified illite-smectite), vermiculite, and chlorite. Poorly diffracting material (PDM) was also quantified and reported as ‘amorphous’. Mineral identification relied on the EVA® software, whilst quantification was performed using Siroquant®. Resulting mineral abundances are reported with a Chi-squared goodness-of-fit between the actual diffractogram and a modelled diffractogram for each sample, as well as an estimated standard error (esd) measurement of uncertainty for each mineral phase quantified. Sensitivity down to 0.1 wt% (weight percent) was achieved, with any mineral detection below that threshold reported as ‘trace’. Although detailed interpretation of the mineralogical data is outside the remit of the present data release, preliminary observations of mineral abundance patterns suggest a strong link to geology, including proximity to fresh bedrock, weathering during sediment transport, and robust relationships between mineralogy and geochemistry. The mineralogical data generated by this study are presented in Appendix A of this report and are downloadable as a .csv file. Mineral abundance or presence/absence maps are shown in Appendices B and C to document regional mineralogical patterns.
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