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The Lanping basin bears rich Pb, Zn, Cu, Ag , and other mineral resources , the distribution of numerous large, very large metal deposits , especially MINERALOGY most famous . Sanshan lead-zinc polymetallic ore belt is located in the northern part of the superlarge Jinding lead-zinc belong Lanping Basin Central Tectonic Zone Jinding lead-zinc mineralization vision . Geological deposit mineralogy and geochemical research in the development and utilization of mineral resources of western Yunnan has an important significance . Through field visits of the ore zone , combined with the indoor data collection , collation and analysis , electron microprobe analysis , and adjacent to the deposit comparison study means to obtain the recognition of Sanshan lead-zinc polymetallic ore belt : 1. Hill lead-zinc metal ore zone orebody at least can be divided into two different types , the first orebody vein ore bodies produced in the Huachang mountain fault fault zone orebody occurrence and toward strictly controlled by Huachang mountain fault into the main ore elements for Ag, Cu, Pb, Zn; second orebody stratiform , lenticular hosted in limestone and siliceous rocks of Upper Triassic Sanhedong orebody occurrence and formation The occurrence is similar to the main ore-forming elements Pb, Zn, of the associated Ag , Cu . Electron microprobe analysis results show that the three mountains lead-zinc polymetallic ore belt ore-forming elements Zn , Pb , Ag, Cu , associated with ore-forming elements such as Fe, Au, Mo, Co , major metallic minerals are sphalerite , galena , pyrite , malachite , azurite , etc.; Zn, Pb, Cu, Fe mutually isomorphous phase form of existence , Au , Mo , Ag , Co and fine particles Assimilant form of occurrence in major metallic minerals ; sphalerite, pyrite , galena compositional types display the Sanshan lead-zinc polymetallic ore belt occur in the orebody the Upper Triassic Sanhedong in experienced deposition - reworking . Of 3 Hill lead-zinc polymetallic belt sulfur parity may be derived from inorganic thermal seawater sulfate reduction and possible contamination of mantle-derived sulfur , carbon , hydrogen , oxygen isotope may be derived from marine carbonate rocks ; Sanshan lead zinc polymetallic ore belt of light and heavy rare earth elements fractionation obvious , and the light rare earth enrichment, δCe negative abnormal δEu .
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