Geochemical studies on Dachang antimony ore deposit in Qinglong, Guizhou Province |
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| Authors: | Zhang Qihou |
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| Institution: | (1) Department of Resource Engineering, Guizhou University of Technology, 550003 Guiyang, China |
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| Abstract: | The Dachang antimony deposit in Qinglong, Guizhou Province, is strictly controlled by the “Dachang Layer” which is a complex
altered rock occurring at unconformity between the Permian Emeishan basalt and the Maokou limestone. Based on the studies
of the hanging- and foot-wall rocks, the trace elements and REE contents of the rocks and ores and heavy placer minerals in
the basalt, this paper is focused on the relations between these data and the “Dachang Layer” and its hanging- and foot-wall
rocks. The author pointed out that the “Dachang Layer” and basalt are the source-beds of antimony; ilmenite and magnetite
are the major mineral carriers of antimony. In the processes of halmyrosis and burial metamorphism of the “Dachang Layer”
and basalt, antimony was mobilized along with the mobilization of iron and was preliminarily concentrated in the “Dachang
Layer”. |
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| Keywords: | antimony halmyrosis burial metamorphism alkali metasomatism |
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