摘要
本文从黄铁矿形态、成分、物理性质和硫同位素方面研究了二道沟金矿床中黄铁矿的标型特征,得出二道沟金矿黄铁矿的标型特征是:晶形以五角十二面体、立方体或其聚形品为主,高S/Fe值,高As、Bi、AuAg,高As/Sb值,高Cu、Pb、Zn,低Hg、Co、Ni,Co/Ni值大于1。黄铁矿导电类型为空穴型、混合型和电子型,以混台型为主;δ^(34)‰直绝大多数为-2—+3。研究表明,黄铁矿标型可直接作为寻找和评价金矿的矿物学标志以及确定矿床成因的指示标志。
The typomorphic peculiarities of pyrite(TPP)in Erdaogou gold deposit have been studied in the paper from some aspects of morphology,chemical composition, physical natures and sulfer isotope analysis,TPP of Erdaogou gold deposit are that crystal types of pyrite are majority of pentagonal dodecahedron,cubic crystal and glomerocryst,haveing higher value of S/Fe,As,Bi,Au,Ag,As/Sb,Cu,Pb,Zn and lower value of Hg,Co,Ni as well as Co/Ni over one chemically.The electrical conductivity of pyrite included hole,electron and electron hole eomplex conduction,and the later one is overwhemling.The value of δ^(34)S‰ ranges from minus two to three.The results show that TPP can be directly used as mineralogic mark for prospecting and evaluating gold deposit and indicator for recognizing the origin of deposit.
关键词
金矿
矿床
黄铁矿
标型特征
Gold deposit
Pyrite
Typomorphic peculiarities
Liaoning Erdaogou
