Font Size: a A A

Mineral Assemblage Zonation And Geochemical Characteristics Of Skarn In Manjiazhai Section Of Dudu Polymetallic Deposit In Yunnan Province

Posted on:2017-01-02Degree:MasterType:Thesis
Country:ChinaCandidate:Z HuangFull Text:PDF
GTID:2270330488964712Subject:Geological engineering
Abstract/Summary:PDF Full Text Request
This paper has introduced all the dragon zinc tin ore containing indium geologic body in detail of rocks and ores, a comprehensive study for the home village of skarn ore block in the profile of our work, and through the sampling and testing results of the sample of the full analysis and research, in the skarn mineral assemblage zoning rules and geochemical characteristics has made the following main result and cognition:(1) determine the man home village ore mineral assemblage zoning, from granite and marble in the order: (granite)-> (diopside-grossular belt)-> (tremolite-diopside belt)->(epidote-diopside belt)-> (chlorite-actinolite belt)-> (calcite-serpentine belt).(2) diopside-grossular belt (dry skarn zone) the main rock types of the shallow red meat diopside grossular skarn, basically do not contain mineral;Tremolite-diopside belt (wet skarn zone) the main rock types of the flash diopside skarns, fully appear flash diopside skarn as ore bell, but it is not the main ore belt;Epidote-diopside, chlorite-actinolite (wet skarn zone) is the main rock types of the green shade diopside skarn, chlorite, actinolite skarn, etc., is the most important metallogenic belt of the ore deposit, main ore type is:sphalerite, iron sphalerite, cassiterite, chalcocite. pyrite. etc.;Calcite-serpentine belt (marble) with the main rock types are:physical and chemical seriate marble, seriate marble and so on, the basic contains no mine.(3) are dragon in the granite rock mass is mainly composed of fine grained biotitc granite and at the top of a small amount of granite porphyry, coarse white mica granite.lt belongs to calcium alkaline granite series, the granite differentiation degree good, for high granite.Because its collision with granite.Dragon granite rock mass formed in late cretaceous, belongs to yanshan period granite, white to zap granite rock mass with mengzi. gejiu granite magmatic activity belong to the same period of the products, belong to the "three flowers" on the south China block.The phase formation of the granite rock mass are generated around polymetallic skarn type deposit. Skarn deposit is late granitic magma and hydrothermal Tian Peng group of early sedimentary carbonate rocks formed by hydrothermal contact metasomatic mctamorphism.Gcochemical element type R cluster analysis results showed that zinc, Sn. Cu mineralization is magmatism and hydrothermal alteration environment after the magma.Ge and Ga gathered on behalf of the mining area for a long time to accept the result of the terrigenous sedimentation.
Keywords/Search Tags:Dulong tin-deposit, Manjiazhai ore block, skarn mineral assemblage zoning, geochemical characteristics
PDF Full Text Request
Related items