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Relevant bibliographies by topics / Duniter

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Journal articles

Academic literature on the topic 'Duniter'

Author: Grafiati

Published: 25 May 2024

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Journal articles on the topic "Duniter"

1

Bazylev, B. A., G. V. Ledneva, Ya V. Bychkova, N. N. Kononkova, T. G. Kuz’mina, and T. V. Romashova. "Estimation of the content and composition of trapped melt in dunite." Геохимия 64, no. 5 (2019): 471–85. http://dx.doi.org/10.31857/s0016-7525645471-485.

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A method was developed for the quantitative estimation of the content of trapped melt in various dunite types and the composition of this melt on the basis of the major- and trace-element characteristics of the dunites and compositions of their chrome spinels. Our approach is advantageous over the method based on clinopyroxene geochemistry and clinopyroxene–melt partition coefficients for the contents of the light REE and more incompatible elements in melt, comparable with it for the middle REE, and possibly less accurate for the heavy REE and Sr. The estimated mean contents of trapped melt in

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2

Malafosse, Maxime, Amandine Pascal, and Serge Amabile. "Commoning with blockchain. The Ğ1 libre currency/Duniter case." Systèmes d'information & management Volume 27, no. 2 (2022): 7–34. http://dx.doi.org/10.3917/sim.222.0007.

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3

Çina, A. "MINERALOGY OF CHROMITITE, BULQIZA ULTRAMAFIC MASSIF, ALBANIAN OPHIOLITIC COMPLEX." Bulletin of the Geological Society of Greece 43, no. 5 (2017): 2577. http://dx.doi.org/10.12681/bgsg.11665.

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Ultramafic massif of Bulqiza belongs to Eastern Jurassic Albanian ophiolite belt of IAT-BSV- type. This massif is the most important chromite-bearing ore. The mantle ultramafics have extremely refractory nature. This is due to the high partial fusion of upper mantle which is depleted in CaO and Al2 O3 . The chromitite is situated to different parts of ultramafic pile, from bottom Cpx harzburgites up to massive dunites and cumulate ultramafic but the mainly chromite potential belongs to mantle harzburgite –dunite level and to transition dunites partly. The chromite is chiefly of Cr-rich metallu

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4

Akizawa, Norikatsu, Asuka Yamaguchi, Kenichiro Tani, Akira Ishikawa, Ryo Fujita, and Sung Hi Choi. "Highly refractory dunite formation at Gibbs Island and Bruce Bank, and its role in the evolution of the circum-Antarctic continent." Canadian Mineralogist 59, no. 6 (2021): 1731–53. http://dx.doi.org/10.3749/canmin.2100030.

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ABSTRACT The continental margin is of profound importance as it records continental growth by accretion of orogenic magmas and following continental rifting. A high degree of mantle melting due to hydrous fluid input is expected to simultaneously stimulate continental growth and lower the intrinsic density of the mantle than more fertile mantle, which in turn isolates the continental lithosphere from the convective mantle. The mantle peridotites from Gibbs Island (South Shetland Islands) and Bruce Bank in the Drake Passage provide us an insight into the tectonic history in the circum-Antarctic

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5

Motov, Andrey, Yury Malakh, and Ilya Voropaev. "Nickel anomalies and gold-quartz mineralization in dunite-harzburgite massifs of the Pervomaisko-Verkhoturinskaya area, Central Urals." Ores and metals, no. 2 (August 16, 2021): 90–98. http://dx.doi.org/10.47765/0869-5997-2021-10012.

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Along with some gold-quartz deposits hosted by dunite-harzburgite massifs elsewhere in the Urals, elevated Ni concentrations were revealed within the ore field of the Anna gold-(sulfide)-quartz deposit localized in weathered oxidized dunites and harzburgites of the Pervomaisky complex (συO2p) in the Pervomaisko-Verkhoturie district of the Central Urals. The spatial association of Au and Ni concentrations in dunites-harzburgites may be attributed to a partial inheritance of Ni-controlling tectonic dislocations by those hosting gold mineralization. Therefore, the combination of halos of Ni and A

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6

Ishimaru, S., and S. Arai. "Possibility of titanium transportation within a mantle wedge: formation process of titanoclinohumite in Fujiwara dunite in Sanbagawa belt, Japan." Solid Earth Discussions 4, no. 1 (2012): 203–39. http://dx.doi.org/10.5194/sed-4-203-2012.

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Abstract. Titinoclinohumite-bearing dunites from Fujiwara, the Sanbagawa metamorphic belt of high-pressure type, Japan, were described to examine the possibility of Ti mobility during metasomatism within the mantle wedge. The Fujiwara dunite body and surrounding high-pressure Sanbagawa schists possibly form a subduction complex, and the dunites are a good analogue to the mantle wedge overlying the slab. The Fujiwara dunites are of deserpentinization origin; the deserpentinized olivine is high in Fo (up to 96) and low in NiO (0.2 to 0.3 wt %), and contains magnetite inclusions. Titanoclinohumit

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7

Stepanov, S. Yu, R. S. Palamarchuk, D. A. Khanin, D. A. Varlamov, and A. V. Antonov. "Character of the distribution and the form of finding platinum group elements in the chromitites of the Svetloborsky, Veresovoborsky and Kamenushensky clinopyroxenite-dunite intrusions (Middle Urals)." Moscow University Bulletin. Series 4. Geology, no. 5 (October 28, 2018): 60–69. http://dx.doi.org/10.33623/0579-9406-2018-5-60-69.

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The note describes the mineralogical and geochemical features of platinum-bearing vein-disseminated and massive chromitite from the dunites of the Svetloborsky, Veresovoborsky and Kamenushensky clinopyroxenite-dunite intrusions located in the Middle Urals. It was found that platinum in chromitites has an extremely uneven distribution and is concentrated in the form of Pt-Fe intermetallides. The texture-structural features of the chromitites studied, the distribution of platinum group elements and the composition of chromoshpinelides in them are similar to the detailed study of the chromitites

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8

Krasnobaev, A. A., P. M. Valizer, and A. L. Perchuk. "ORDOVICIAN AGE OF DUNITE-WEHRLITE-CLINOPYROXENITE BENDED COMPLEX OF NURALI MASSIF (SOUTHERN URALS, RUSSIA): SHRIMP U-PB ZIRCON DATING." Moscow University Bulletin. Series 4. Geology, no. 1 (February 28, 2018): 60–70. http://dx.doi.org/10.33623/0579-9406-2018-1-60-70.

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We present the data of geochemistry and geochronology of zircons from wehrlites and clinopyroxenites from dunite-wehrlite-clinopyroxenite bended complex of the base of crustal section of ophiolite Nurali massif. The U-Pb age of the bended complex is 450±4 Ma which is different from the previous data. Zircons from the studied rocks have complimentary REE patterns and similar U-Pb ages to lherzolites and dunites from mantle section of the Nurali massif.

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9

Kuzmin, I. A., R. S. Palamarchuk, V. M. Kalugin, A. V. Kozlov, and D. A. Varlamov. "Chromite-platinum mineralization of clinopyroxenite-dunite massif Zheltaya Sopka, North Ural." МИНЕРАЛОГИЯ (MINERALOGY), no. 3 (December 2020): 46–59. http://dx.doi.org/10.35597/2313-545x-2020-6-4-3.

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The paper presents the new data on platinum group minerals (PGM) and chromite from the Zheltaya Sopka massif, North Urals. Few chromite bodies along with specifc composition of chromite indicate weak ore-forming processes developed in this massif. Minakawaite (RhSb) and chengdeite (Ir3Fe) are found for the frst time in the Uralian Platinum Belt. The PGM assemblage of the Zheltaya Sopka massif is compared with that of the Iov, Yuda, and Sosnovsky dunite massifs of the northern part of the Uralian Platinum Belt. As a result, similar PGM assemblages with domi¬nant minerals of late assemblages are

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10

Yang, Sai-Hong, Ben-Xun Su, Xiao-Wen Huang, et al. "Platinum-Group Mineral Occurrences and Platinum-Group Elemental Geochemistry of the Xiadong Alaskan-Type Complex in the Southern Central Asian Orogenic Belt." Minerals 8, no. 11 (2018): 494. http://dx.doi.org/10.3390/min8110494.

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Alaskan-type complexes commonly contain primary platinum-group element (PGE) alloys and lack base-metal sulfides in their dunite and chromite-bearing rocks. They could therefore host PGE deposits with rare sulfide mineralization. A detailed scanning electron microscope investigation on dunites from the Xiadong Alaskan-type complex in the southern Central Asian Orogenic Belt revealed: various occurrences of platinum-group minerals (PGMs) that are dominated by inclusions in chromite grains containing abundant Ru, Os, S and a small amount of Pd and Te, indicating that they mainly formed prior to

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