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Journal articles on the topic 'Lamproite'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Chalapati Rao, N. V., and V. Madhavan. "Some Observations on the Geochemistry of Ramannapeta-Ustapalle Lamproitic Body, Krishna District, Andhra Pradesh." Journal Geological Society of India 47, no. 4 (1996): 409–18. http://dx.doi.org/10.17491/jgsi/1996/470403.

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Abstract Detailed petological and geochemical studies pertaining to the lamproitic body recorded by the Geological Survey of India at Ramannapeta-Ustapalle, Krishna district, Andhra Pradesh, are presented. Unmistakable lamproite signatures like the presence of Ti-rich potassic richterite, abundance of Ti-rich, Al-poor phlogopite and Ca-rich, Al-poor clinopyroxene, absence of primary calcite, paucity of typical kimberlite indicator minerals and the ultra potassic nature are recognised. Major oxide as well as the trace elemental abundances of the body are observed to be similar to those of the C

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2

Mitchell, Roger H. "Igneous Rock Associations 26. Lamproites, Exotic Potassic Alkaline Rocks: A Review of their Nomenclature, Characterization and Origins." Geoscience Canada 47, no. 3 (2020): 119–42. http://dx.doi.org/10.12789/geocanj.2020.47.162.

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Lamproite is a rare ultrapotassic alkaline rock of petrological importance as it is considered to be derived from metasomatized lithospheric mantle, and of economic significance, being the host of major diamond deposits. A review of the nomenclature of lamproite results in the recommendation that members of the lamproite petrological clan be named using mineralogical-genetic classifications to distinguish them from other genetically unrelated potassic alkaline rocks, kimberlite, and diverse lamprophyres. The names “Group 2 kimberlite” and “orangeite” must be abandoned as these rock types are v

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3

Kaur, Gurmeet, Roger H. Mitchell, and Suhel Ahmed. "Mineralogy of the Vattikod lamproite dykes, Ramadugu lamproite field, Nalgonda District, Telangana: A possible expression of ancient subduction-related alkaline magmatism along Eastern Ghats Mobile Belt, India." Mineralogical Magazine 82, no. 1 (2018): 35–58. http://dx.doi.org/10.1180/minmag.2017.081.045.

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ABSTRACTThe mineralogy of nine recently discovered dykes (VL1:VL8 and VL10) in the vicinity of Vattikod village, Nalgonda district in Telangana State is described. The mineral assemblage present and their compositions are comparable to those of bona fide lamproites in terms of the presence of phlogopite (Ti-rich, Al-poor phlogopite and tetraferriphlogopite); amphiboles (potassic-arfvedsonite, potassic-richterite, potassic-ferro-richterite, potassic-katophorite, Ti-rich potassic-katophorite, Ti-rich potassic-magnesio-katophorite); Al-poor clinopyroxenes; feldspars (K-feldspar, Ba-K-feldspar and

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4

Jaques, A. Lynton, Frank Brink, and Jiang Chen. "Magmatic haggertyite in olivine lamproites of the West Kimberley region, Western Australia." American Mineralogist 105, no. 11 (2020): 1724–33. http://dx.doi.org/10.2138/am-2020-7456.

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Abstract We report the first occurrence of magmatic haggertyite (BaFe6Ti5MgO19) from the Miocene lamproites of the West Kimberley region of Western Australia. This contrasts with the metasomatic formation reported in an olivine lamproite host at the type locality, Prairie Creek, Arkansas. Haggertyite occurs in the groundmass of a diamondiferous olivine lamproite pipe in the Ellendale field, and within the large zoned Walgidee Hills lamproite where it forms part of an extensive suite of Ba- and K-bearing titanate and Ti-rich silicate minerals. The haggertyite co-exists with chromian spinel, per

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5

Talukdar, Debojit, N. V. Chalapathi Rao, J. Amal Dev, J. K. Tomson, Alok Kumar, and Ashutosh Pandey. "Palaeoproterozoic Lamproite Pulses from the Eastern Dharwar Craton, Southern India: Some Geodynamic Implications." Journal Of The Geological Society Of India 101, no. 6 (2025): 919–24. https://doi.org/10.17491/jgsi/2025/174184.

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ABSTRACT The cratonic regions of the Indian Shield host numerous Precambrian lamproites. A majority of these lamproites are dated at Mesoproterozoic (1070-1434 Ma) using whole-rock 40Ar-39Ar, zircon U-Pb, and mica K-Ar and Rb-Sr geochronology methods. This paper reports the results of Sm-Nd (apatite) and U-Pb (rutile) geochronology on the lamproites from the Somavarigudem and Gundrapalle from the Ramadugu Lamproite Field, Eastern Dharwar Craton. The polychronous nature of the lamproite emplacement in the Eastern Dharwar Craton is illustrated by their new Palaeoproterozoic (2040±31 Ma and 2002±

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6

Kaur, Gurmeet, and Roger H. Mitchell. "Mineralogy of the baotite-bearing Gundrapalli lamproite, Nalgonda district, Telangana, India." Mineralogical Magazine 83, no. 03 (2019): 401–11. http://dx.doi.org/10.1180/mgm.2018.169.

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AbstractWe describe the mineralogy of a lamproite dyke from Gundrapalli village (Nalgonda district), Telangana, India. The dyke consists of a mineral assemblage characteristic of lamproites in terms of the presence of amphiboles (mainly potassic-richterite together with potassic-arfvedsonite, magnesio-riebeckite, Ti-rich potassic-magnesio-arfvedsonite, potassic-magnesio-arfvedsonite, katophorite and potassic-ferri-katophorite), Al-poor pyroxene, phlogopite (Ti-rich, Al-poor), pseudomorphed leucite, spinel (chromite-magnesiochromite), fluorapatite, baryte, titanite, rutile, barytocalcite, calci

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7

Chalapathi Rao, N. V., and V. Madhavan. "Titanium-Rich Phlogopites from the Zangamarajupalle Kimberlitic Rock, Andhra Pradesh, India." Journal Geological Society of India 47, no. 3 (1996): 355–63. http://dx.doi.org/10.17491/jgsi/1996/470308.

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Abstract Electron probe studies on the phlogopites from the Zangamarajupalle kimberlitic rock (14°76'7" : 78°88'3" E) in the Proterozoic Cuddapah basin, Andhra Pradesh, reveal their titanium rich (6 wt%) nature - a character typical of lamproite micas. The compositions and their systematic variation in the phlogopite micas of the Zangamarajupalle-kimberlitic rock are compared and contrasted with those of other kimberlitic and lamproitic rocks including pipe-2 Wajrakarur, pipeS (Muligiripalle) and Maddur (Mahbubnagar) - all of which have an ambiguous identity. The utility of phlogopite composit

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8

AKAL, CÜNEYT. "K-richterite–olivine–phlogopite–diopside–sanidine lamproites from the Afyon volcanic province, Turkey." Geological Magazine 145, no. 4 (2008): 570–85. http://dx.doi.org/10.1017/s0016756808004536.

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AbstractMiddle Miocene volcanic activity in the Afyon volcanic province (eastern part of Western Anatolia) is characterized by multistage potassic and ultrapotassic alkaline volcanic successions. The volcanism is generally related to the northward subduction of the African plate beneath the Eurasian Plate. In Afyon, the Middle Miocene volcanic products consist of melilite leucitite, tephriphonolite, trachyte, basaltic–trachyandesite, phonolite, phonotephrite, tephriphonolite and lamproite rocks. Near-surface emplacement and relatively quiescent subaerial eruptions of lamproitic magma produced

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9

P., Ramesh Chandra Phani, and Srinivas M. "Calcrete Geochemistry in identifying Kimberlite Lamproite Exploration Targets A case study from Nalgonda district, Telangana, southern India." International Journal of Trend in Scientific Research and Development 2, no. 2 (2018): 964–73. https://doi.org/10.31142/ijtsrd9575.

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The pedogenic carbonates, found mainly in arid and semi arid regions of the world, are commonly referred to as calcretes or caliche or kankar. These are authigenic carbonate products which occur in association with soil, forming the residual regolith. Many rock types can produce calcretes upon weathering and denudation, but calcrete derived from certain rocks like kimberlite lamproite acts as an exploration guide. Calcrete is a prominent sampling medium in diamond rich countries like Australia and South Africa whereas it has not received popularity in the Indian context. Kimberlites being ultr

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10

Foley, Stephen, and Maik Pertermann. "Dynamic Metasomatism Experiments Investigating the Interaction between Migrating Potassic Melt and Garnet Peridotite." Geosciences 11, no. 10 (2021): 432. http://dx.doi.org/10.3390/geosciences11100432.

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Dynamic metasomatism experiments were performed by reacting a lamproite melt with garnet peridotite by drawing melt through the peridotite into a vitreous carbon melt trap, ensuring the flow of melt through the peridotite and facilitating analysis of the melt. Pressure (2–3 GPa) and temperature (1050–1125 °C) conditions were chosen where the lamproite was molten but the peridotite was not. Phlogopite was formed and garnet and orthopyroxene reacted out, resulting in phlogopite wehrlite (2 GPa) and phlogopite harzburgite (3 GPa). Phlogopites in the peridotite have higher Mg/(Mg + Fe) and Cr2O3 a

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11

Chayka, Ivan F., Alexander V. Sobolev, Andrey E. Izokh, et al. "Fingerprints of Kamafugite-Like Magmas in Mesozoic Lamproites of the Aldan Shield: Evidence from Olivine and Olivine-Hosted Inclusions." Minerals 10, no. 4 (2020): 337. http://dx.doi.org/10.3390/min10040337.

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Mesozoic (125–135 Ma) cratonic low-Ti lamproites from the northern part of the Aldan Shield do not conform to typical classification schemes of ultrapotassic anorogenic rocks. Here we investigate their origins by analyzing olivine and olivine-hosted inclusions from the Ryabinoviy pipe, a well preserved lamproite intrusion within the Aldan Shield. Four types of olivine are identified: (1) zoned phenocrysts, (2) high-Mg, high-Ni homogeneous macrocrysts, (3) high-Ca and low-Ni olivine and (4) mantle xenocrysts. Olivine compositions are comparable to those from the Mediterranean Belt lamproites (O

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12

Skjernaa, L. "A lamproite stock with ellipsoidal phlogopite nodules at Oqaitsúnguit, Disko Bugt, central West Greenland." Rapport Grønlands Geologiske Undersøgelse 154 (January 1, 1992): 33–47. http://dx.doi.org/10.34194/rapggu.v154.8167.

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A small stock containing a medium- to coarse-grained phlogopite-rich lamproite occurs in the Archaean Ata granitoid in West Greenland. It was emplaced by a combination of forceful intrusion and assimilation. Metasomatic alteration has taken place in the country rock near the stock and in xenoliths. Although there are similarities with other lamproites, the Oqaitsunguit lamproite differs with respect to (1) mineralogy. The main mineral phases are phlogopite, microcline, K-richterite, K-Mg-arfvedsonite, aegirine-augite and diopside; (2) coarse grain size; (3) low whole-rock TiO2, FeO and SiO2 co

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13

Chatterjee, A. K., and K. S. Rao. "Majhgawan Diamondiferous Pipe, Madhya Pradesh, India - A Review." Journal Geological Society of India 45, no. 2 (1995): 175–89. http://dx.doi.org/10.17491/jgsi/1995/450206.

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Abstract The alkaline ultrabasic diatreme at Majhgawan has an idealised geological setting being intruded into the platformal Kaimur sandstones of the Lower Vindhyan Supergroup (1400-1100 Ma) overlying cratonic Bundelkhand granite basement (2550 Ma) which is a typical archon as per Janse (1992). Recent Rb/Sr age data indicate 1042 Ma (Smith 1992) and 1067 Ma (Anil Kurnar and Gopalan 1992) for the Majhgawan pipe. The pipe with surface dimension of 500 × 320 m is a carrot shaped body reminiscent of a typical kimberlite with minimal erosion. The pipe rock has been classified as lamproite by Scott

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14

Ajit Kumar Reddy, T. "Kimberlite and Lamproite Rocks of Vajrakarur Area, Andhra Pradesh." Journal Geological Society of India 30, no. 1 (1987): 1–12. http://dx.doi.org/10.17491/jgsi/1987/300101.

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Abstract Kimberlite and lamproite diatremes of late Proterozoic age (840 to 1020 m.y.) within the Archaean granites and gneisses (Peninsular Gneiss) around Vajrakarur in Andhra Pradesh show unusual mineralogy, mantle and crustal xenoliths and variable diamond distribution. Two of the pipe rocks correspond to kimberlite breccias with around 40% crustal xenoliths. Two pipe rocks are identical in mineralogy, xenolith content and chemistry to the classical kimberlites of Kimberley in South Africa. These four kimberlite pipes are diamond-bearing with xenocrysts and megacrysts of forsteritic olivine

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15

BUZZI, L., L. GAGGERO, L. GROZDANOV, S. YANEV, and F. SLEJKO. "High-Mg potassic rocks in the Balkan segment of the Variscan belt (Bulgaria): implications for the genesis of orogenic lamproite magmas." Geological Magazine 147, no. 3 (2009): 434–50. http://dx.doi.org/10.1017/s0016756809990550.

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AbstractUltrapotassic plutons from several domains of the Variscan orogenic belt have been in turn interpreted as syn- to post-orogenic due to their age spread, but assessment of their geodynamic setting and source regions is still open to interpretation. In the Svoge region (Bulgaria), at the southern margin of the Balkan orogen, peralkalic plutons are hosted within Ordovician pelites. The main intrusion, with lamproitic affinity, which hosts monzodiorite xenoliths and a polyphase syenite suite, was emplaced at a shallow level.40Ar–39Ar dating by step-heating of amphibole and biotite yielded

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16

Toscani, L. "Magmatic gold grains in the El Tale lamproite, Fortuna, SE Spain." Mineralogical Magazine 63, no. 4 (1999): 595–602. http://dx.doi.org/10.1180/minmag.1999.063.4.12.

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AbstractGold of magmatic origin has been discovered in the lamproitic dyke of El Tale (Fortuna, Province of Murcia), a small outcrop of ultrapotassic rocks of tile Tertiary magmatic province of southeastern Spain. It is the first finding of gold grains in lamproite magmas from southeastern Spain, and indeed worldwide. Pure gold occurs only in the glassy groundmass as very rare spherules and globular grains (up to 5 µm). Despite the occurrence of gold grains, the bulk rock contains not more than ∼19 ppb Au.The magmatic origin of gold is inferred from the heterogeneous distribution of the grains

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17

Mitchell, R. H., and Fareeduddin. "Mineralogy of peralkaline lamproites from the Raniganj Coalfield, India." Mineralogical Magazine 73, no. 3 (2009): 457–77. http://dx.doi.org/10.1180/minmag.2009.073.3.457.

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AbstractTwo mineralogically distinct lamproites occurring as dykes in the Raniganj coalfield of eastern India are described in terms of a mineralogical-genetic classification as: (1) peralkaline olivine-ilmenitephlogopite- K-feldspar lamproite (var. Damodar); and (2) peralkaline pseudoleucite-phlogopite-amphibole- K-feldspar lamproite (var. Damodar). Compositional and paragenetic data are provided for major, accessory and trace minerals. Minerals common to both rocks include: chlorite-pseudomorphed phenocrystal olivine, phenocrystal Ti-rich Al-poor phlogopite and tetraferriphlogopite, groundma

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18

Chalapathi Rao, N. V., S. A. Gibson, D. M. Pyle, and A. P. Dickin. "Contrasting Isotopic Mantle Sources for Proterozoic Lamproites and Kimberlites from the Cuddapah Basin and Eastern Dharwar Craton: Implication for Proterozoic Mantle Heterogeneity Beneath Southern India." Journal Geological Society of India 52, no. 6 (1998): 683–94. http://dx.doi.org/10.17491/jgsi/1998/520607.

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Abstract Kimberlites intruding the Precambrian basement towards the western margin of the Cuddapah basin near Anantapur (1090 Ma) and Mahbubnagar (1360 Ma) in Andhra Pradesh have initial 87Sr/86Sr between 0.70205 to 0.70734 and eNd between +0.5 to +4.68. Mesoproterozoic lamproites (1380 Ma) from the Cuddapah basin (Chelima and Zangamarajupalle) and its NE margin (Ramannapeta) have initiail 87Sr/86Sr between 0.70520 and 0.7390 and eNd from -6.43 to -8.29. Combined Sr- and Nd-isotopic ratios suggest that lamproites were derived from "enriched" sources which have time-averaged higher Rb/Sr and lo

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19

Carlier, Gabriel, and Jean-Pierre Lorand. "First occurrence of diopside sanidine phlogopite lamproite in the Andean Cordillera: the Huacancha and Morojarja dikes, southern Peru." Canadian Journal of Earth Sciences 34, no. 8 (1997): 1118–27. http://dx.doi.org/10.1139/e17-090.

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Two dikes of diopside sanidine phlogopite lamproite composition, emplaced during the Plio-Quaternary, have been discovered along the main active fault system in the Altiplano region of southern Peru. These rocks have mineralogical characteristics and bulk-rock compositions typical of phlogopite lamproite (i.e., Ti-rich and Al-poor phlogopite, K-richterite, 4 < K2O/Na2O < 5, and very high contents of incompatible elements (Ba, Sr, light rare earth elements)). Moreover, these dikes show textural, mineralogical, and bulk-rock features that have been described only in phlogopite lamproite fr

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20

Dushin, V. A. "On the issue of potential primary sources of diamonds in the Urals." Regional Geology and Metallogeny, no. 99 (September 21, 2024): 116–27. https://doi.org/10.52349/0869-7892_2024_99_116-127.

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The article provides a brief description of the newly identified Akhtyl basanite-analcimite complex, as well as the Sertynya lamproite and Sylva fluidolite diamond-containing complexes, which are confined to the submeridional rift structures of the western and eastern borders of the Uralian orogeny. The author conducted a mineralogical and petrographic study of diamond-bearing alkalibasite rocks identified as lamproites, kersantites, analcimites, basanites, and fluidolites. He demonstrates their probable fluid-magmatic genesis, as indicated by both structural, textural and mineralogical featur

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21

Bakarzhiieva, M. I., and T. Sikan. "GEODYNAMICS." GEODYNAMICS 2(11)2011, no. 2(11) (2011): 27–29. http://dx.doi.org/10.23939/jgd2011.02.027.

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Local geomagnetic criteria of the kimberlite and lamproite areas are considered. Theoretical magnetic model of the kimberlite (lamproite) pipe is presented. Magnetic field of the pipe or of its separate components is calculated. 3D magnetic models of the Zeleniy Gay, Gruzsk and Shchorsov areas of the Ingul geoblock of the Ukrainian Shield are developed.

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22

Edgar, A. D., L. A. Pizzolato, and J. Sheen. "Fluorine in igneous rocks and minerals with emphasis on ultrapotassic mafic and ultramafic magmas and their mantle source regions." Mineralogical Magazine 60, no. 399 (1996): 243–57. http://dx.doi.org/10.1180/minmag.1996.060.399.01.

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AbstractIn reviewing the distribution of fluorine in igneous rocks it is clear that F abundance is related to alkalinity and to some extent to volatile contents. Two important F-bearing series are recognized: (1) the alkali basalt—ultrapotassic rocks in which F increases with increasing K2O and decreasing SiO2 contents; and (2) the alkali basalt—phonolite—rhyolite series with F showing positive correlation with both total alkalis and SiO2. Detailed studies of series (1) show that F abundance in ultrapotassic magmas (lamproite, kamafugite, lamprophyre) occurs in descending order in the sequence

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23

Kaur, Parminder, Suresh C. Patel, Roger H. Mitchell, et al. "Mineralogy of K-Rich Rocks from the Jharia Basin in Jharkhand: Indications for Cretaceous Lamproite Magmatism in Eastern India." Canadian Journal of Mineralogy and Petrology 61, no. 1 (2023): 105–43. http://dx.doi.org/10.3749/2200021.

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Abstract Potassic dikes of early Cretaceous age (ca. 115 Ma) are emplaced in the Gondwana sedimentary basins of the Damodar valley in eastern India. Two potassic dikes in the Jharia basin (Ena and Moonidih) are characterized by the presence of olivine macrocrysts and phenocrysts, together with microphenocrysts of olivine, phlogopite–biotite, ilmenite, and apatite. These are set in a groundmass of phlogopite, apatite, ilmenite, spinel, and K-feldspar. Microphenocrystal and groundmass Al-Na-poor diopside and Al-poor Ti-rich amphibole are present in the Ena dike, whereas rutile, pyrite, galena, Z

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24

Cowan, D., and G. Cooper. "Enhancement of lamproite magnetic signatures." ASEG Extended Abstracts 2009, no. 1 (2009): 1. http://dx.doi.org/10.1071/aseg2009ab111.

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25

EDGAR, A. D., H. E. CHARBONNEAU, and R. H. MITCHELL. "Phase Relations of an Armalcolite-Phlogopite Lamproite from Smoky Butte, Montana: Applications to Lamproite Genesis." Journal of Petrology 33, no. 3 (1992): 505–20. http://dx.doi.org/10.1093/petrology/33.3.505.

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26

Salvioli-Mariani, E., L. Toscani, and D. Bersani. "Magmatic evolution of the Gaussberg lamproite (Antarctica): volatile content and glass composition." Mineralogical Magazine 68, no. 1 (2004): 83–100. http://dx.doi.org/10.1180/0026461046810173.

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AbstractThe lamproite of Gaussberg is an ultrapotassic rock where leucite, olivine and clinopyroxene microphenocrysts occur in a glass-rich groundmass, containing microliths of leucite, clinopyroxene, apatite, phlogopite and rare K-richterite.Abundant silicate melt inclusions occur in olivine, leucite and, rarely, in clinopyroxene microphenocrysts. Raman investigations on melt inclusions showed the presence of pure CO2 in the shrinkage bubbles. On the other hand, the glass of the groundmass is CO2-poor and contains up to 0.70 wt.% of dissolved H2O, as estimated by infrared spectra. It is infer

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27

Smellie, J. L., and K. D. Collerson. "Chapter 5.5 Gaussberg: volcanology and petrology." Geological Society, London, Memoirs 55, no. 1 (2021): 615–28. http://dx.doi.org/10.1144/m55-2018-85.

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AbstractGaussberg is a nunatak composed of lamproite pillow lava situated on the coast of East Antarctica. It is the most isolated Quaternary volcanic centre in Antarctica but it is important palaeoenvironmentally and petrologically out of all proportion to its small size. The edifice has a likely low, shield-like, morphologyc.1200 m high and possibly up to 10 km wide, which is unusually large for a lamproite construct. Gaussberg was erupted subglacially at 56 ± 5 ka, which places it late in the last glacial, close to the peak of marine isotope stage 3. The coeval ice sheet wasc.1300 m thick,

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28

Cambeses, A., A. Garcia-Casco, J. H. Scarrow, P. Montero, L. A. Pérez-Valera, and F. Bea. "Mineralogical evidence for lamproite magma mixing and storage at mantle depths: Socovos fault lamproites, SE Spain." Lithos 266-267 (December 2016): 182–201. http://dx.doi.org/10.1016/j.lithos.2016.10.006.

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29

Cundari, A., and A. K. Ferguson. "Petrogenetic relationships between melilitite and lamproite." Contributions to Mineralogy and Petrology 107, no. 3 (1991): 343–57. http://dx.doi.org/10.1007/bf00325103.

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30

Thompson, R. N., D. Velde, P. T. Leat, et al. "Oligocene lamproite containing an Al-poor, Ti-rich biotite, Middle Park, northwest Colorado, USA." Mineralogical Magazine 61, no. 407 (1997): 557–72. http://dx.doi.org/10.1180/minmag.1997.061.407.08.

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AbstractA small 33 ± 0.8 Ma lamproite pluton is exposed in the midst of a 23–26 Ma basalt-rhyolite province in Middle Park, NW Colorado. It contains abundant phlogopite phenocrysts in a fine-grained groundmass of analcime pseudomorphs after leucite, biotite, potassic richterite, apatite, ilmenite and accessory diopside. The phlogopite phenocryst cores contain ∼4 wt.% TiO2, 1% Cr2O3 and 0.2% BaO. The smallest groundmass biotites have normal pleochroism but compositions unlike any previously reported, with ∼2% Al2O3, ∼8% TiO2 and F <1.5%. Apart from those elements affected by leucite alterati

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31

YATSENKO, Ivan, Sergey SKUBLOV, Ekaterina LEVASHOVA, Olga GALANKINA, and Sergey BEKESHA. "Composition of spherules and lower mantle minerals, isotopic and geochemical characteristics of zircon from volcaniclastic facies of the Mriya lamproite pipe." Journal of Mining Institute 242 (May 25, 2020): 150. http://dx.doi.org/10.31897/pmi.2020.2.150.

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The article presents the results of studying the rocks of the pyroclastic facies of the Mriya lamproite pipe, located on the Priazovsky block of the Ukrainian shield. In them the rock's mineral composition includes a complex of exotic mineral particles formed under extreme reduction mantle conditions: silicate spherules, particles of native metals and intermetallic alloys, oxygen-free minerals such as diamond, qusongite (WC), and osbornite (TiN). The aim of the research is to establish the genesis of volcaniclastic rocks and to develop ideas of the highly deoxidized mantle mineral association

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32

Venturelli, Giampiero, Silvio Capedri, Mario Barbieri, Lorenzo Toscani, Emma Salvioli Mariani, and Marco Zerbi. "The Jumilla lamproite revisited: a petrological oddity." European Journal of Mineralogy 3, no. 1 (1991): 123–46. http://dx.doi.org/10.1127/ejm/3/1/0123.

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33

Kent, R. W., N. C. Ghose, P. R. Paul, M. J. Hassan, and A. D. Saunders. "Coal—magma interaction: an integrated model for the emplacement of cylindrical intrusions." Geological Magazine 129, no. 6 (1992): 753–62. http://dx.doi.org/10.1017/s0016756800008475.

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AbstractOlivine-bearing lamproite magmas intruded into Permian coal seams in northeast India occur as root-like cylinder stockworks, extending for up to several kilometres up-dip along the bedding planes of their sedimentary host. Clusters of eight or more conduits are typical, linked by thin tubular cross-branches. Cylindrical geometry may arise by injection of hot, low-viscosity fluid through a slot, with the development of multiple tube-like instabilities at the interface between the moving fluid and a higher-viscosity host. This behaviour appears more complex than the models of Chouke, van

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34

Kazachenko, V. T., and E. V. Perevoznikova. "Isotopic (Sm–Nd) and Geochemical (Nb/Y–Zr/Y) Systematics of the Sikhote-Alin Basic-Hyperbasic Complexes." Геохимия 68, no. 4 (2023): 341–66. http://dx.doi.org/10.31857/s0016752523040064.

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The paper demonstrates the possibility of application of the 143Nd/144Nd–Sm/Nd and Nb/Y–Zr/Y diagrams to systematics of basic–ultrabasic complexes of different age: Paleozoic Kalinovsky, Cambrian Sergeevsky and Vladimiro-Aleksandrovsky, and Jurassic and Paleocene ones. The position of data points of the Kalinovsky, Sergeevsky, and Vladimiro-Aleksandrovsky complexes in the diagrams indicates their derivation from a primitive mantle-type (BSE) source, the derivatives of which are frequently associated with Cu, Ni, Co, and PGE mineralization. The position of data points of metabasic rocks of the

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White, S. H., H. de Boorder, and C. B. Smith. "Structural controls of kimberlite and lamproite emplacement." Journal of Geochemical Exploration 53, no. 1-3 (1995): 245–64. http://dx.doi.org/10.1016/0375-6742(94)00033-8.

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Mitchell, R. H., and A. D. Edgar. "Melting experiments on SiO 2 -rich lamproites to 6.4 GPa and their bearing on the sources of lamproite magmas." Mineralogy and Petrology 74, no. 2-4 (2002): 115–28. http://dx.doi.org/10.1007/s007100200000.

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Aber, James S., and Susan W. Aber. "Limestone Xenoliths in Hills Pond Lamproite, Woodson County, Kansas." Transactions of the Kansas Academy of Science 104, no. 1 & 2 (2001): 123–28. http://dx.doi.org/10.1660/0022-8443(2001)104[0123:lxihpl]2.0.co;2.

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Drew, Graeme J., and Duncan R. Cowan. "Geophysical Signature of the Argyle Lamproite Pipe, Western Australia." Exploration Geophysics 25, no. 3 (1994): 170. http://dx.doi.org/10.1071/eg994170b.

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Jenke, Graham, and Duncan R. Cowan. "Geophysical Signature of the Ellendale Lamproite Pipes, Western Australia." Exploration Geophysics 25, no. 3 (1994): 171. http://dx.doi.org/10.1071/eg994171.

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Novgorodova, M. I., Ye V. Galuskin, R. V. Boyarskaya, and A. V. Mokhov. "ACCESSORY MINERALS IN LAMPROITE-LIKE ROCKS FROM CENTRAL ASIA." International Geology Review 29, no. 3 (1987): 295–306. http://dx.doi.org/10.1080/00206818709466146.

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Orlova, M. P. "CLASSIFICATION AND NOMENCLATURE OF ROCKS OF THE LAMPROITE SERIES." International Geology Review 33, no. 3 (1991): 263–68. http://dx.doi.org/10.1080/00206819109465691.

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42

Linthout, Kees, and Wim J. Lustenhouwer. "Ferrian high sanidine in a lamproite from Cancarix, Spain." Mineralogical Magazine 57, no. 387 (1993): 289–99. http://dx.doi.org/10.1180/minmag.1993.057.387.11.

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AbstractNa-poor, Fe-bearing high sanidine from a lamproite near Cancarix (Spain) has 2Vα‖(010) = 37-43° and C2/m, a = 8.598(15), b = 13.050(26), c = 7.209(17) Å, β = 116.00(18)° V = 727(2) Å3. Rims of sanidine crystals against vugs contain up to 60 mole % KFeSi3O8 and up to 10 at.% Si and 6 at.% K above the stoichiometric requirement; otherwise, they have up to 4 mole % □Si4O8 and 3 mole % K2O.Si4O8 in solid solution. Their MgO content may reach 0.46 wt.%. The skeletons of mm sized blocky crystals (Baveno habit) indicate formation under moderate undercooling at temperatures not much above 725°

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Migdisova, N. A., N. M. Sushchevskaya, M. V. Portnyagin, T. A. Shishkina, D. V. Kuzmin, and V. G. Batanova. "COMPOSITION OF PHENOCRYSTS OF LAMPROITE LAVA, GAUSSBERG VOLCANO, EAST ANTARCTICA." Геохимия 68, no. 9 (2023): 897–925. http://dx.doi.org/10.31857/s001675252309008x.

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This paper presents numerous new data on the geochemical composition of olivine, clinopyroxene, and leucite phenocrysts, as well as spinel inclusions in olivine and quench glass from lamproites of the Gaussberg Volcano (East Antarctica). Most of the olivine phenocrysts in the Gaussberg lamproites are high Mg varieties (Fo 89–91) with elevated Ni contents (up to 4900 ppm) and high Ni/Co ratios. According to the data of about 320 analyzes of clinopyroxenes, two groups of phenocrysts belonging to the diopside group have been established. Group I consists mainly of high-Mg varieties (Mg#80), while

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MITCHELL, R. H. "Melting Experiments on a Sanidine Phlogopite Lamproite at 4-7 GPa and their Bearing on the Sources of Lamproitic Magmas." Journal of Petrology 36, no. 5 (1995): 1455–74. http://dx.doi.org/10.1093/petrology/36.5.1455.

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Chalapathi Rao, N. V., J. A. Miller, S. A. Gibson, D. M. Pyle, and V. Madhavan. "Precise 40Ar/ 39Ar Age Determinations of the Kotakonda Kimberlite and Chelima Lamproite, India: Implication to the Timing of Mafic Dyke Swarm Emplacement in the Eastern Dharwar Craton." Journal Geological Society of India 53, no. 4 (1999): 425–32. http://dx.doi.org/10.17491/jgsi/1999/530405.

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Abstract 40Ar/ 39Ar age spectra of groundmass phlogopite separates from the Kotakonda kimberlite (Eastern Dharwar craton) and the Chelima lamproite (Cuddapah basin) are dominated by major plateaus at 1401.4±4.6Ma and 1417.8±8.2 Ma respectively. These ages are consistent (within their error limits) with the conventional K-Ar dates on phlogopite separates from the same samples earlier reported by us. This study supports our contention that the emplacement of Kotakonda kimberlite and Chelima lamproite was contemporaneous and these pipes are older than the Anantapur kimberlites (-1090 Ma) of the E

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Basu, A., A. K. Bhattacharya, and D. K. Paul. "Petrology and Geochemistry of the Lamprophyric Rocks from the Bokaro Coalfield, Bihar and their Economic Potential." Journal Geological Society of India 50, no. 3 (1997): 255–66. http://dx.doi.org/10.17491/jgsi/1997/500302.

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Abstract The dyke swarms intruding the Gondwana sequence in the east Bokara Coalfield, Bihar include lamprophyres and lamproites such as olivine lamproties, olivine-leucite lamproites and leucite lamproites. Basic intrusives and rare siderite rich carbonates (carbonatite ?) are also found. The olivine lamproites contain xenocrysts of olivine and rare xenoliths of harzburgite. Gold values upto 3.6 ppm on grab samples have been noted from the intrusive rocks in the area. These lampropbyric rocks are considered to have formed from a highly incompatible element enriched metasomatised mantle source

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Dunn, Dennis P. "Diamond economics of the Prairie Creek lamproite, Murfreesboro, AR, USA." Ore Geology Reviews 22, no. 3-4 (2003): 251–62. http://dx.doi.org/10.1016/s0169-1368(02)00144-0.

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Vladykin, N. V. "Potassium alkaline lamproite-carbonatite complexes: petrology, genesis, and ore reserves." Russian Geology and Geophysics 50, no. 12 (2009): 1119–28. http://dx.doi.org/10.1016/j.rgg.2009.11.010.

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Schmidt, K. H., P. Bottazzi, R. Vannucci, and K. Mengel. "Trace element partitioning between phlogopite, clinopyroxene and leucite lamproite melt." Earth and Planetary Science Letters 168, no. 3-4 (1999): 287–99. http://dx.doi.org/10.1016/s0012-821x(99)00056-4.

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Drew, Graeme J., and Duncan R. Cowan. "DIAMONDS: Geophysical signature of the Argyle lamproite pipe, Western Australia." ASEG Extended Abstracts 1994, no. 1 (1994): 391–402. http://dx.doi.org/10.1071/asegspec07_29.

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