Structure, Mineralogical, and Geochemical Features and Formation Conditions of Ore Veins in the Mo Porphyry Shakhtama Deposit (Eastern Transbaikalia)

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Abstract

The results of a comprehensive detailed study of the vein structure, mineral zoning of veins, and mineral typomorphism of the Shakhtama deposit obtained on the basis of new samples from poorly studied horizons are given. The results obtained show that the Mo resources of the deposit are far from being exhausted, and the typomorphic features of ore minerals indicate that base metal mineralization associated with Au (Ag), also continues to a depth, along with Mo. The presence of rare Sr mineral, svanbergite, in the Shakhtamа deposit and the typomorphic properties of ore minerals testify in favor of the near-surface origin of the exposed mineralization. The succession of mineral formation has been established. Based on the study of ore and metasomatic zonality, fluid inclusions and isotopic data, as well as the composition of structural impurities in molybdenite, conclusions were made of the formation conditions of ore mineralization in a porphyry ore-forming system.

About the authors

G. A. Yurgenson

Institute of Natural Resources, Ecology and Cryology, Siberian Branch, Russian Academy of Sciences

Email: kis60@rambler.ru
672002, Chita, Russia

G. D. Kiseleva

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences

Email: kis60@rambler.ru
119017, Moscow, Russia

A. A. Dolomanova-Topol

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences

Email: kis60@rambler.ru
119017, Moscow, Russia

V. A. Kovalenker

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences

Email: kis60@rambler.ru
119017, Moscow, Russia

V. A. Petrov

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences

Email: kis60@rambler.ru
119017, Moscow, Russia

V. D. Abramova

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences

Email: kis60@rambler.ru
119017, Moscow, Russia

Yu. I. Yazykova

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences

Email: kis60@rambler.ru
119017, Moscow, Russia

L. A. Levitskaya

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences

Email: kis60@rambler.ru
119017, Moscow, Russia

N. V. Trubkin

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences

Email: kis60@rambler.ru
119017, Moscow, Russia

V. I. Taskaev

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences

Email: kis60@rambler.ru
119017, Moscow, Russia

O. V. Karimova

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences

Author for correspondence.
Email: kis60@rambler.ru
119017, Moscow, Russia

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