Results 21 to 30 of about 924 (220)
Comparative characteristics of diamonds from areas with a high density of kimberlite bodies
Известия высших учебных заведений: Геология и разведка, 2023 Background. This paper presents a comparative study into diamonds from kimberlite bodies of the Verkhnemunsky field (Zapolyarnaya, Novinka, Komsomolskaya-Magnitnaya and Poiskovaya), the results of which allow these minerals to be distinguished from those
N. N. Zinchuk, V. I. Koptil
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Giraffe kimberlite pipe core GDGT fractional abundance [PDF]
, 2023 Database for the fractional abundances of GDGTs present in the Giraffe kimberlite pipe core (paleolatitude ~63o N). Dataset contains depth, in vertical-equivalent meters, of each sample, as well as the fractional abundance of each of the analyzed lipids.
Pérez-Angel, Lina +9 more
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On the presence of the postmagmatic stage of diamond formation in kimberlites
Записки Горного института, 2022 On nowadays multiphase and the facies heterogeneity of the formations are distinguished at the study of kimberlite pipes. Most researchers associate the formation of diamonds only with the mantle source.
Sergey K. Simakov, Yuri B. Stegnitskiy
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Geotechnical Modelling for Kimberlite Pipes [PDF]
Proceedings of the First Southern Hemisphere International Rock Mechanics Symposium, 2008 EKATI Diamond Mine is located some 200 km south of the Arctic Circle and 300 km northeast of Yellowknife in the Northwest Territories of Canada. It is a remote fly-in-fly-out site with road access limited to the winter ice road season. The operation currently consists of two active open pits and two underground operations.
Duncan Tyler, S Godden
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A mantle origin for sulfates in the unusual “salty” Udachnaya-East kimberlite from sulfur abundances, speciation and their relationship with groundmass carbonates [PDF]
BSGF - Earth Sciences Bulletin, 2017 The Udachnaya-East pipe in Yakutia in Siberia hosts a unique dry (serpentine-free) body of hypabyssal kimberlite (
D’Eyrames Elisabeth +5 more
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Geosciences, 2022 Тhe task of searching for kimberlite pipes in covered areas of the Yakutia kimberlite province is very difficult due to the significant heterogeneity of the rocks overlying kimberlite pipes.
Alexander K. Saraev +2 more
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Origin of Graphite-Diamond-Bearing Eclogites from Udachnaya Kimberlite Pipe [PDF]
, 2021 Kimberlite-borne mantle eclogites represent an important diamond source rock. Although the origin and stability of diamond, as opposed to its low-pressure polymorph graphite, have been studied for decades, their relationship in rare natural samples where
Aulbach, Sonja +7 more
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TRACE ELEMENT PARTITIONING BETWEEN APATITE AND KIMBERLITE-LIKE MELTS – IMPLICATIONS FOR VOLATILE DEGASSING AND FORMATION OF DIFFERENT KIMBERLITE FACIES [PDF]
, 2021 Kimberlites are the deepest mantle magmas to reach the surface of the Earth and the hosts of the major primary diamond deposits. The enigmatic nature of kimberlites owing to poorly constrained triggers of kimberlite magmatism, melt composition, and ...
Chow, Richard
core
Геодинамика и тектонофизика, 2022 This paper reports the results on the composition of lithosphere mantle under the Mirny kimberlite field. The authors investigated 57 samples of the mantle xenoliths collected from the Mir pipe.
T. V. Kalashnikova +3 more
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Oxide minerals of Kaavi kimberlites (Finland)
Известия высших учебных заведений: Геология и разведка, 2019 The mineralogical and petrogeochemical features of the Neoproterozoic kimberlite rocks of the Lahtojoki and Niilonsuo pipes of the Kaavi cluster (Kaavi-Kuopio, Finland) have been studied, differences in their petrogeochemical composition, quantitative ...
N. S. Azarova +4 more
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