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《ACTA GEOSICIENTIA SINICA》 1995-04
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The Characters and Evolution of Minerogenetic Fluids of Changpu Tin Deposits

Ma Xiujuan(Institute Iof Mineral Deposits ,CAGS,Beijing)  
The study of the fluid inclusions of Changpu tin deposits indicates that the minerals in the de-posits are rich in fluid inclusions. They include liquid inclusions ,gaseous inclusions , multi-phase in-clusions involving liquid CO_2 , and multi-phase inclusions involving daughter minerals. The miner-alization can be divided into three stages : cassiterite-quartz-tourmaline stage , cassiterite-sulfidesstage ,and barren quartz stage,Fromearly stage to late one both the temperature and the salinityreveal a decreasing trend , but the overlapping phenomenon is obvious.In this area the minerogenet-ic temperature range is from 160℃to 410℃; the optimum temperature range is 220-340℃; thesalinity range is 2-16W_(NaCl)%. The mineralization pressure is 30-45 MPa , which coresponds tominerogenetic depth of 1.2-1.8km. The mineralization thermal liquids came mainly from magmafluids , and at the late stage they were influenced by meteoric water. The boiling temperature of thefluids may be 269.2℃; the pressure :12.5Mpa; the depth :0.5km.
【CateGory Index】: P618.44
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【Citations】
Chinese Journal Full-text Database 1 Hits
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
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7 Yu Huilong(Hubei School of Geology);THE MATERIAL SOURCE OF AND THE PROPERTIES OF ORE-FORMING SOLUTIONS RESPONSIBLE FOR STRATABOUND Sb DEPOSITS IN CARBONATE ROCKS AT XUJIASHAN, HUBEI PROVINCE[J];Geochimica;1987-02
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【Co-references】
Chinese Journal Full-text Database 10 Hits
1 Liu Jiayuan(Institute of Hidden Ore Deposits Prognostication,Gullin College of Geology);TECTONIC EVOLUTION AND GENETIC TYPES OF THE PRECAMBRIAN GRANITOIDS IN SOUTH CHINA AND THEIR RELATIONSHIPS WITH MINERALIZATION[J];GEOLOGY OF ANHUI;1994-Z1
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6 FANG Wei-xuan1,2,HU Rui-zhong1,XIE Gui-qing 1,SU Wen-chao1 (1.Laboratory of Ore Deposit Geochemis try,Institute of Geochemistry,Chi nese Academy of Sciences,Guiyang550002,China;2.Northwest Geological Exploration B ureau,CNNC,Xi ' an710054,China);TECTONOLITHOSTRATIGRAPHIC UNITS OF THE AILAOSHAN AREA IN YUNNAN,CHINA AND THEIR IMPLI CATIONS OF TECTONIC EVOLUTION[J];Geotectonica Et Metallogenia;2002-01
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