Ore-Bearing Fluids of the Blagodatnoye Gold Deposit (Yenisei Ridge, Russia): Results of Fluid Inclusion and Isotopic Analyses

被引：8

作者：

Shaparenko, Elena ^{[1
]}

Gibsher, Nadezhda ^{[1
]}

Tomilenko, Anatoly ^{[1
]}

Sazonov, Anatoly ^{[2
]}

Bul'bak, Taras ^{[1
]}

Ryabukha, Maria ^{[1
]}

Khomenko, Margarita ^{[1
]}

Silyanov, Sergey ^{[2
]}

Nekrasova, Natalya ^{[2
]}

Petrova, Marina ^{[1
]}

机构：

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

[2] Siberian Fed Univ, Dept Geol Mineral & Petrog, Krasnoyarsk 660041, Russia

来源：

MINERALS | 2021年 / 11卷 / 10期

关键词：

Yenisei Ridge; Blagodatnoye deposit; gold; fluid inclusions; gas chromatography-mass spectrometry; FORMING FLUIDS; PHYSICOCHEMICAL PARAMETERS; HYDROTHERMAL FLUIDS; QUARTZ VEINS; AGE; TEMPERATURE; EVOLUTION; GEOCHEMISTRY; HYDROCARBONS; TECTONICS;

D O I：

10.3390/min11101090

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The Blagodatnoye deposit with 340 t gold reserves is one of the most productive mines in Russia. Modern methods of studying fluid inclusions were used to determine the properties of fluids that formed this deposit. A comprehensive study revealed that the Blagodatnoye gold deposit was formed between 120 and 350 degrees C and at 0.2-2.6 kbar, and from fluids with salinities ranging from 0.5 to 30 wt.% (NaCl-eq.). These fluids are: 1-water-carbon dioxide; 2-carbon dioxide-hydrocarbon; 3-highly saline aqueous. According to Raman spectroscopy and gas chromatography-mass spectrometry, ore-forming fluids contained H2O, CO2, hydrocarbons and oxygenated organic compounds, sulfonated, nitrogenated and halogenated compounds. Early oxidized water-carbon dioxide fluids formed barren associations of the deposit. Later reduced carbon dioxide-hydrocarbon fluids had a key role in the formation of gold-bearing quartz veins. The stable isotope data (delta S-34 = 0.8 to 21.3 parts per thousand, delta C-13 = -2.8 to -20.9 parts per thousand, He-3/He-4 = 0.14 +/- 0.3 x 10(-6)) suggest the ore-forming fluids have a crustal source.

引用

页数：20

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