The Alshar Epithermal Au-As-Sb-Tl Deposit, Southern Macedonia

Volkov, A. and Serafimovski, Todor and Kochneva, Nina T. and Tomson, Ilmar N. and Tasev, Goran (2006) The Alshar Epithermal Au-As-Sb-Tl Deposit, Southern Macedonia. Geology of Ore Deposits, 48 (3). pp. 175-192. ISSN 1075-7015

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The results of tectono-metallogenic, geological-structural, mineralogical, isotopic and thermobarogeochemical studies at the Alshar deposit and in the adjacent area are discussed. The data obtained show that the gold mineralization at the deposit is similar to that observed at the Carlin-type deposits in the western United Stales. Similar characteristics include the Au-As-Sb—Tl-Hg geochemical assemblage; low Pb, Zn, Cu, and Ag contents in ore; widespread jasperoid and argillic metasomatic alterations of host siliciclastic-carbonate sedimentary rocks; and the spatial relations to fault zones. At the same time, the Alshar deposit differs from the Carlin-type deposits by the following features: (1) Pliocene age of mineralization. (2) expansion of mineralization over younger volcanics, (3) a high Tl grade in ore, and (4) localization of the ore field in a long-lived central-type magmatic structure. The results obtained can be used as an exploration model.

Item Type: Article
Subjects: Natural sciences > Earth and related environmental sciences
Divisions: Faculty of Natural and Technical Sciences
Depositing User: Goran Tasev
Date Deposited: 22 Nov 2012 08:17
Last Modified: 04 Jun 2013 09:12

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