Carbonaceous substance of the Sukhoi Log gold deposit (East Siberia)

被引：10
|
作者：
Razvozzhaeva, E. A. [1 ]
Nemerov, V. K. [1 ]
Spiridonov, A. M. [1 ]
Prokopchuk, S. I. [1 ]
机构：
[1] RAS, Siberian Branch, Inst Geochem, Irkutsk 664033, Russia
来源：
RUSSIAN GEOLOGY AND GEOPHYSICS | 2008年 / 49卷 / 06期
基金：
俄罗斯基础研究基金会;
关键词：
carbonaceous shale; insoluble carbonaceous substance; concentrate of insoluble carbonaceous substance;
D O I：
10.1016/j.rgg.2007.09.015
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Insoluble carbonaceous substance (ICS) at the Sukhoi Log gold deposit has been studied following the scheme: source shales- concentrates - residual substance of rocks. Examination by electron microscopy, transmission electron microscopy with electron microdiffraction, thermography, and mass spectrometry revealed several morphogenetic ICS varieties: dot-drop-like, honeycomb, single graphite crystals, and spherical graphite crystals. Study of source shales and concentrates has shown their similar carbon isotope compositions (delta C-13(av) = 18.03-17.54%). Residual carbonaceous substance is characterized by a heavy carbon isotope composition (delta C-13(av) = 10%). Its enrichment with heavy carbon isotope, as compared with the source rocks, calls for special geochemical studies. The ICS heterogeneity in the Sukhoi Log shales points to variations in the physicochemical settings of ore formation at the deposit. (C) 2008, IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：371 / 377
页数：7
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