A new body of highly diamondiferous kimberlites in the Nakyn field of the Yakutian kimberlite province

被引：9

作者：

Tolstov, A. V. ^{[2
]}

Minin, V. A. ^{[1
]}

Vasilenko, V. B. ^{[1
]}

Kuznetsova, L. G. ^{[1
]}

Razumov, A. N. ^{[2
]}

机构：

[1] RAS, Inst Geol & Mineral, Siberian Branch, Novosibirsk 630090, Russia

[2] ALROSA Joint Stock Co, Botuobiyan Geol Prospecting Expedit, Yakutsk, Sakha Republic, Russia

来源：

RUSSIAN GEOLOGY AND GEOPHYSICS | 2009年 / 50卷 / 03期

关键词：

kimberlites; pyropes; Cr-spinel; petrochemistry; Yakutia; SOUTH-AFRICA; GEOCHEMISTRY; GARNETS; PETROGENESIS; XENOLITHS;

D O I：

10.1016/j.rgg.2008.09.001

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We report the first data on the contents of main oxides and REE in rocks and the compositions of pyropes and almandines from the Maiskoe kimberlite body recently discovered in the Nakyn field of the Yakutian kimberlite province. The kimberlites are characterized by low contents of Ti, a slight domination of Mg over Ca, and high contents of K2O in some samples. The pyropes have high contents of Cr2O3 (up to 14.5 wt.%); many of them (similar to 16%) are poor in Ca. In petrochemical and mineralogical features the kimberlites of the Maiskoe body are complementary to the highly diamondiferous kimberlites of the nearby Botuobinskaya and Nyurbinskaya pipes. At the same time, they are not the final link in the evolution of kimberlite magmatism in the Nakyn field, which makes the latter still more promising for diamonds. (C) 2009, IGM, Siberian Branch of the RAS. Published by Elsevier B. V. All rights reserved.

引用

页码：162 / 173

页数：12

共 8 条

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DOKLADY EARTH SCIENCES, 2014, 454 (02) : 179 - 184
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RUSSIAN JOURNAL OF EARTH SCIENCES, 2018, 18 (03):
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Srivastava, Rajesh K.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 2009, 157 (02) : 245 - 265
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N. V. Chalapathi Rao
Rajesh K. Srivastava
Contributions to Mineralogy and Petrology, 2009, 157 : 245 - 265

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