GOLD IN SECONDARY QUARTZ ROCK MASSIFS IN THE WESTERN ALTAI-SAYAN FOLDED REGION AND PROSPECTS FOR DISCOVERING LARGE-VOLUME GOLD-ORE DEPOSITS THERE

G. N. Cherkasov

Siberian Research Institute of Geology, Geophysics and Mineral Resources, Novosibirsk

The article proves gold bearing potential of secondary quartz rocks in the Altai-Sayan folded region. The formation of the rocks is confined to the periods of tectonomagmatic activation with appearance of contrast gabbro-granite magmatism of the alkaline nature. The article discusses geochemical positions of gold-silica syngenesis, the role of gold clusters being a part of the common gold deposit and having impact on the analysis of gold content in secondary quartz rocks. It is assumed that most gold-quartz and gold-sulphide-quartz veins of the final stage of formation of beresite metasomatites are of magmatic mature.

Key words: gold, alkaline gabbro-granite magmatism, quartz veins, secondary quartzites, tectonomagmatic activation, gold clusters.

DOI 10.20403/2078-0575-2016-4-53-62