新疆阿舍勒铜矿床中黝铜矿的特征

Characteristics of Tetrahedrite from the Ashele Copper Deposit, Xinjiang

新疆阿舍勒火山岩型块状硫化物铜矿床中黝铜矿广泛产出，并以锌砷黝铜矿为特征。在以铜为主的主矿体（Ⅰ号矿体）中，黝铜矿几乎均属锌砷黝铜矿，含银甚低，其化学成分在时空分布上变化不大且无显著的变化规律，不同类型矿石之间黝铜矿的成分变化也不大；但在以铅锌为主的次要的Ⅱ号矿体中黝铜矿含一定量的银。与其它各类矿床相比，锌砷黝铜矿是阿舍勒黝铜矿的主要类型，也是阿尔泰成矿带的主要黝铜矿类型。

Tetrahedrite is a common cupreous sulfide mineral in the Ashele volcanic massive sulfide deposit. In the main (No.I) orebody, it is characterized by high As content but low Sb, in No.Ⅱ orebody, it is characterized by high Sb content but low As; in both orebodies, it is cha_ racterized by high Zn content and insignificant temporal and spatial variations of chemical compositions. Compared with other kinds of ore deposits, zinc_tennantite is a kind of typomorphic mineral in the Altai mineralization province and is useful for the exploration of volcanogenic massive sulfide deposits.