湖南前寒武系锑金矿床成矿的独特性  

Peculiarity of mineralization in Sb-Au deposits of precambrian system,Hunan

作　　者：鲍振襄[1] 万榕江[1] 鲍珏敏[1] 

机构地区：[1]湘西地勘5队,湖南乾州416007

出　　处：《黄金地质》2001年第3期30-36,共7页Gold Geology

摘　　要：在湖南前寒武系不同矿物组合的金矿床中 ,锑金矿床是常见的一类。矿床主要赋存于前寒武系一套厚大的、富含火山物质的浅变质岩系中。成矿严格受断裂破碎带或脆 韧性剪切带控制。辉锑矿是Au的主要载体矿物之一 ,含Au 0 17× 10 - 6～ 110× 10 - 6,Au的分布率为 15 1%～38 2 %或更高。锑金矿化具有明显的时间连续性和空间分带性。富Au辉锑矿以早期细粒、富含As以及Se、Te等杂质和具有轻S同位素组成为特征。成矿流体的∑S浓度。Of all the gold deposits consist of different mineral assemblage of precambrian syatem in Hunan,the Sb Au deposits are one common associated gold deposits,which occure in a light metamorphic rock series of thick and rich in volocanic meterials.Mineralization strongly controlled by crush belt or brittle ductile shear zone.Stibnite is one of the main carrier mineral of gold,its Au content is 0 17×10 -6 ～110×10 -6 ,Au distribution rate is 15 1%～38 2% or more.Sb Au mineraliztion presents obviously zonation in space and concordancy in time.The high Au stibnites are characterized with the early fine grains,high As,Te,Se of impure constituent elements and light S isotope composition. Concentration of ore forming fluids,mineralizing tempurture and medium conditions of wall rocks are the main facters to control the mineralization of Sb Au deposits.

关 键 词：锑金矿床 地质地球化学 标型特征 湖南 前寒武系 

分 类 号：P618.51[天文地球—矿床学]