Geological conditions of the localisation of large base metal deposits in Rudny Altai.

Of the thousand or more known ore occurrences in this 40 000 km2 iron-base metal ore-forming province of Kazakhstan and Russia, just six contain around 70% of the lead, zinc and copper: Ridder-Sokolnoye and Tishinskoye in the Leninogorsk ore district, Zyryanovsk and Malyeevka in the Zyryanovsk district, Belousov in the Pri-Irtysh district and Orlovsk in the Orlovsk-Zolotushinsk district. Their geology is described and illustrated and their relationships with the Basalt-Rhyolite-Terrigenous Formation and the underlying Caledonian basement are discussed. The deposits associated with different compositions of basalts and rhyolites are distinguished and regional mineral zoning patterns are identified from the varying ratios of copper, lead, zinc and barite in the ores.
Of the thousand or more known ore occurrences in this 40 000 km2 iron-base metal ore-forming province of Kazakhstan and Russia, just six contain around 70% of the lead, zinc and copper: Ridder-Sokolnoye and Tishinskoye in the Leninogorsk ore district, Zyryanovsk and Malyeevka in the Zyryanovsk district, Belousov in the Pri-Irtysh district and Orlovsk in the Orlovsk-Zolotushinsk district. Their geology is described and illustrated and their relationships with the Basalt-Rhyolite-Terrigenous Formation and the underlying Caledonian basement are discussed. The deposits associated with different compositions of basalts and rhyolites are distinguished and regional mineral zoning patterns are identified from the varying ratios of copper, lead, zinc and barite in the ores.