摘要
四川石棉县大水沟独立碲矿床地质特征陈毓川，银剑钊，周剑雄，毛景文（中国地质科学院北京１０００３７）杨百川，骆耀南（四川省有色稀贵金属公司成都６１００７２）（四川省地质矿产局成都６１００８１）关键词四川，独立碲矿，地质特征碲在地壳中的丰度极低，仅为０．...
Dashuigou tellurium ore deposit is located in the connecting part between the geosycline and the Yangtze platform. It is limited in the leguminous tectonic microlithon, which is enclosed by the Luding-Mianning regional ductile shear zone. The microlithon is a xnetamorphic dome which is composed of middle-lower Triassic sirata. The core of the dome is a set of coarse-crystallized marble. The limbs are constituted by cafe-quartz shist, sericite-tremolite with marble interbed. It is 15000m thick.Twelve pyrrhotite veins have been found and four of them been mined. The strike of the ore veins are SN and NNE (0°-10°), the dip angle 60°～70°. Tellurium ore veins are closely associated with pyrrhotite ones and controlled by the lat ter. The former penetrates into the latter. The ore veins obviously bevel the strata around them. The single tellurium ore vein is 0.3-0.5m thick. All of them take the shape of lenticule and have the characteristics of thinning out and reproducibility in both strike and dip direction. The main ore vein is 150m long and extends 50m in the deep.Wall-rock,alterations are extensively developed in the mine. The main alterations are muscovitization, ankeritation, silication, sericitization, tourmalinization, chloritization and so on.Mineral assemblage of the ores are as follows: pyrite, pyrrhotite, tetradymite,chalcopyrite, sphalerite, joseite, tellurobismuthite, trigona, hessite, tellurium, etc. Its gangue minerals are dolomite, ankerite, calcite, quartz and muscovite, etc.As the first and the only independent tellurium ore deposit in the world at present, Dashuigou tellurium ore deposit is probably giant according to Laznicka P.(1989).
出处
《地质科学》
CAS
CSCD
北大核心
1994年第2期165-167,共3页
Chinese Journal of Geology(Scientia Geologica Sinica)
基金
地质矿产部定向基金
国家"八五"901攻关项目
关键词
碲矿床
地质特征
四川
independent tellurium ore deposit, geological characteristics,Sichuan Province
