Involvement of deep-source components in Sb mineralization on the southwestern margin of the Yangtze massif A discussion on its possibility

1 Geology Extensively developed on the southwestern margin of the Yangtze massif are epithermal deposits suchas gold, silve r, antimony, mercury, arsenic, uranium, copper and lead-zinc ore deposits, as well asbarite, fluorite, iceland spar and rock crystal deposits, which constitute a unique low-temperature metallogenic domain. Except for the Gongguan deposit, the important Sb deposits in China are concentrated inthis low-temperature metallogenic domain, constituting the Hunan-Guizhou-Guangxi-Yunnan Sb ore belt.In general this ore belt extends in the NNE direction, measuring 1 900 km or more in length and 200 kmin width. A total of 505 Sb deposits (or occurrences) are known, accounting for 85.5 % of the