Composition of cloudy microinclusions in octahedral diamonds from the Internatsional'naya kimberlite pipe (Yakutia)

被引：38

作者：

Skuzovatov, S. Yu. ^{[1
,2
]}

Zedgenizov, D. A. ^{[1
]}

Shatsky, V. S. ^{[1
,2
]}

Ragozin, A. L. ^{[1
]}

Kuper, K. E. ^{[3
]}

机构：

[1] Russian Acad Sci, Siberian Branch, VS Sobolev Inst Geol & Mineral, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

[3] Russian Acad Sci, Siberian Branch, GI Budker Inst Nucl Phys, Novosibirsk 630090, Russia

来源：

RUSSIAN GEOLOGY AND GEOPHYSICS | 2011年 / 52卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

diamond; microinclusions; crystallization medium; cathodoluminescence; nitrogen; isotopic composition of carbon; SYSTEM CAO-MGO-AL2O3-SIO2-CO2; MINERAL INCLUSIONS; CARBONATITIC MELTS; FIBROUS DIAMONDS; FLUID INCLUSIONS; HIGH-PRESSURE; MANTLE FLUID; ABUNDANCE; GROWTH; DJERFISHERITE;

D O I：

10.1016/j.rgg.2010.12.007

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Diamond microinclusions provide the unique opportunity to study the composition of the mineral-forming medium. The paper presents the first data on the composition of cloudy microinclusions in the cores of octahedral diamonds from the Internatsional'naya pipe. These zones are of cuboid shape and have a fibrous internal structure. Here, the microinclusions form a continuous trend from chloride-carbonate to carbonate composition. Their composition slightly overlaps that of the microinclusions in cuboids from the same pipe, but in a carbonate-enriched zone. Also, data on N aggregation suggest that the early cubic zones which formed before octahedra crystallized at higher temperature or spent considerably more time in the mantle than cubic crystals and fibrous rims of variety IV diamonds. (C) 2011, V. S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.

引用

页码：85 / 96

页数：12

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