Composition and genesis of the Konevinsky gold deposit, Eastern Sayan, Russia

被引：6
|
作者：
Damdinov, B. B. [1 ]
Zhmodik, S. M. [2 ]
Roshchektaev, P. A. [3 ]
Damdinova, L. B. [1 ]
机构：
[1] Russian Acad Sci, Inst Geol, Siberian Branch, Ul Sakhyanovoi 6a, Ulan Ude 670047, Russia
[2] Russian Acad Sci, Inst Geol & Mineral, Siberian Branch, Prosp Akad Koptyuga 3, Novosibirsk 630090, Russia
[3] Rifei OOO, Ul Babushkina 185, Ulan Ude 670031, Russia
来源：
GEOLOGY OF ORE DEPOSITS | 2016年 / 58卷 / 02期
基金：
俄罗斯基础研究基金会;
关键词：
MASSIVE SULFIDE DEPOSITS; PORPHYRY; MINERALIZATION;
D O I：
10.1134/S1075701516020033
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The Konevinsky gold deposit in southeast Eastern Sayan is distinguished from most known deposits in this region (Zun-Kholba, etc.) by the geological setting and composition of mineralization. To elucidate the cause of the peculiar mineralization, we have studied the composition, formation conditions, and origin of this deposit, which is related to the Ordovician granitoid pluton 445-441 Ma in age cut by intermediate and basic dikes spatially associated with metavolcanic rocks of the Devonian-Carboniferous Ilei Sequence. Four mineral assemblages are recognized: (1) quartz-pyrite-molybdenite, (2) quartz-gold-pyrite, (3) gold-polysulfide, and (4) telluride. Certain indications show that the ore was formed as a result of the superposition of two distinct mineral assemblages differing in age. The first stage dated at similar to 440 Ma is related to intrusions generating Cu-Mo-Au porphyry mineralization and gold-polysulfide veins. The second stage is controlled by dikes pertaining to the Devonian-Carboniferous volcanic-plutonic association. The second stage is characterized by gain of Hg and Te and formation of gold-mercury-telluride paragenesis.
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收藏
页码：134 / 148
页数：15
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