A Case History of Applying In situ Analysis of the Sulfur Isotopic Compositions of Sulfides from Ores of the Largest Deposits in the Bodaibo Synclinorium (Eastern Siberia)


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Аннотация

The experience of applying the laser ablation technique to study the sulfur isotopic compositions of pyrite and arsenopyrite samples from gold deposits of the Baikal–Patom highland is discussed. The experimental procedure is described. All studied samples were found to display δ34S and δ33S values in strict compliance with the law of mass-dependent sulfur isotope fractionation. Regular lightening of the sulfur isotope composition in the course of crystal growth for pyrites from the Sukhoi Log deposit and the isotopic homogeneity of pyrite and pyrrhotite from the Golets Vysochaishii deposit were established. The conclusion that the sulfur isotopic homogeneity of sulfides in the ores occurs probably owing to metamorphism within the Mama–Oron belt was made.

Авторлар туралы

N. Goryachev

Northeast Interdisciplinary Science Research Institute,
Far East Branch, Russian Academy of Sciences; Institute of Geochemistry, Siberian Branch,
Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: goryachev@neisri.ru
Ресей, Magadan, 685000; Irkutsk, 664033

A. Ignat’ev

Far East Geological Institute, Far East Branch,
Russian Academy of Sciences

Email: goryachev@neisri.ru
Ресей, Vladivostok, 690022

T. Velivetskaya

Far East Geological Institute, Far East Branch,
Russian Academy of Sciences

Email: goryachev@neisri.ru
Ресей, Vladivostok, 690022

A. Budyak

Institute of Geochemistry, Siberian Branch,
Russian Academy of Sciences

Email: goryachev@neisri.ru
Ресей, Irkutsk, 664033

Yu. Tarasova

Institute of Geochemistry, Siberian Branch,
Russian Academy of Sciences

Email: goryachev@neisri.ru
Ресей, Irkutsk, 664033

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