摘要
碲是一种稀散元素,主要分布于硫化物类矿物中,在金矿床、硫化物矿床中往往以伴生组分出现.目前虽已发现碲矿物90余种,但其地壳平均丰度为1X10^(-7)((?)1975;(?)1962;(?)1935)至n×l0^(-7)(F.W.Clarke,1924),过去认为不能单独形成具有工业意义的矿床.四川省石棉县所发现的独立碲(铋)矿床,最近经地矿部有关专家研究一致认为该矿床规模可观,找矿前景良好,是新的矿床类型,具有重要的科学价值和实际意义.
AbstractThe independent telluric ore deposit found in Sichuan, China is the first of its kind ever discoveried in the world. It is located in a metamorphic-thermal dome with an approximately north - sourth trend composed of slighthy metamorphosed lower Triassic carbonate - clastic rocks. The main tellurium mineral is tetradymite, mainly appearing in massive form, or as veined disseminated in dolomite and massive pyrrhotite ore all being geochemically characterized by a Te-Bi-Au-Ag association of industrial value. It is a typical hydrothermal filling deposit genetically related the metamorphic-thermal dome formed in a tectono-magmatically active geological setting.29
出处
《中国地质》
CAS
CSCD
1994年第2期27-29,共3页
Geology in China
