New Data on the Age of Gold Mineralization in the Southeastern Part of Eastern Sayan


Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

This article presents new data on the age of the largest gold deposits in the southeastern part of Eastern Sayan. The dates have been obtained by Ar–Ar analysis of micas occurring in gold-bearing quartz veins and mineralized zones. The obtained Ar–Ar ages of fuchsite and sericite from the tectonized and mineralized zones of the Zun–Holba deposit (ore body Severnoye-3), range within 353.9–386.4 Ma; a similar result of 352.9 Ma was yielded by Ar–Ar dating of Cr–muscovite from mylonitized listvenite in the veins of the periphery of the Zun–Ospa gold deposit. However, muscovite from the ore-bearing quartz vein of the Pioneer gold–quartz deposit, located near Zun–Holba, has been dated to 421.9 Ma. The obtained new data on isotopic age of the gold–quartz ores and gold–sulphide–quartz deposits allow recognition of the Early Palaeozoic accretion–collision and the Late Palaeozoic shearing stages of formation of gold mineralization in the SE Eastern Sayan.

About the authors

B. B. Damdinov

Geological Institute, Siberian Branch

Author for correspondence.
Email: damdinoc@mail.ru
Russian Federation, Ulan-Ude

S. M. Zhmodik

Institute of Geology and Mineralogy, Siberian Branch

Email: damdinoc@mail.ru
Russian Federation, Novosibirsk

A. V. Travin

Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University

Email: damdinoc@mail.ru
Russian Federation, Novosibirsk; Novosibirsk

D. S. Yudin

Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University

Email: damdinoc@mail.ru
Russian Federation, Novosibirsk; Novosibirsk

N. A. Goryachev

Northeastern Complex Research Institute, Far East Branch; Institute of Geochemistry, Siberian Branch

Email: damdinoc@mail.ru
Russian Federation, Magadan; Irkutsk

Supplementary files

Supplementary Files
Action
1. JATS XML

Copyright (c) 2018 Pleiades Publishing, Ltd.