Central Yunnan Dayao Copper Mineralization Geological Characteristics And Mechanism

The sandstone copper mine is an important kind of copper ore. the Yunnan sandstone copper mine mainly distributes in Dianzhong local Mesozoic era basin (Dayao deposit copper ore is its typitall representation) and in the Simao Mesozoic era basin.The Chuxiong basin sandstone copper mine mainly distributes in the Dianzhong . the Dayao deposit copper ore and the Mouding deposit copper ore are its typical representation. The Mouding deposit copper ore has been exhausted. So the article take the Da Yao copper mine for example to elaborates the Chuxiong basin sandstone copper mine's geological feature. The Da Yao copper mine lies in the north of the Chuxiong basin, and it is the best mineralization centralized area in Yunnan. After exploration and appraisal, it has six ore deposit: the Aodiju deposit ore, the Liuju deposits ore, the Xiaohe deposit ore, the Shimenkan deposit ore, the Luojimuzha deposit ore, the Yanzikou deposit ore . Besides the Aodiju ore deposit, others deposit in early chalk series Matoushan group Liuju section sandstone strata. The deposit ore has characters of big scale, high quality, super technical of excavatation and processing.Red rock also massively grow in Simao area, the copper mine spot spreads all over this area, but until now there has not been discovered one that can compare with the Da Yao sandstone copper, this article initially analyses the reasons.Therefore, this article, carefully analyses the geological information that has been known, with fully the predecessor's results. The article takes the copper mine of DianZhong for example, and elaborats the geological characteristic of its region and ore deposit; In Simao area, first, it describs the regional geology characteristic, then, describes the characteristic of its distribution, in the end it also analyses the differences and similarity between Dianzhong area and Simao area.In view of above questions, after outside investigation of a year and a half, and acquisition of information reorganization inside, after new research work, we draw the following conclusion.Geological differences : silicarenite deposits thick In Dianzhong area but thin inSimao area. The quantity of copper mine in mudstone is few. the medium sand crag contains the ore in Dianzhong, But the novaculite or the calcium politic siltstone contains the ore in Simao area, In Dianzhong area, the hydrothermal (or hot bittern) superimposes of later period, displays for the quartz vein, the carbonate arteries superimposition.But simao area lacks the appearance. In the Dianzhong area, stratum the organic matter function was obvious, but it's not obviously in Simao area .Geological similarities : both the two areas are red deposition, sandstone copper deposit ore, the land facies caustic deposit, and both have the same geology evolution; The mineral combination are all the green copper ore in the surface, derivative is the blue copper mine; The sandstone copper deposit ore's qualify is generally low, and it is extremely similar with Dianzhong area; The two area's layer is also similar.