甘肃西和县金崖沟金锑矿特征浅析  

CHARACTERISTICS OF JINYAGOU GOLD-ANTIMONY DEPOSIT IN XIHE CONUTY OF GANSU PROVINCE

作　　者：董国强[1] 张炜[1] 李增[1] 万旭辉[1] 

机构地区：[1]甘肃省地质调查院,甘肃兰州730000

出　　处：《甘肃地质》2017年第1期49-55,共7页Gansu Geology

基　　金：甘肃省西和县金崖沟金矿普查(甘地发[2014]174)

摘　　要：甘肃西和县金崖沟金、锑矿位于南秦岭北部的岷县鹿儿坝—西和崖湾—两当广金坝金、汞、锑成矿亚带上。矿带长约1 km,由一条NE向高角度断层F1控制,矿(化)体主要处于断层的下盘即南东盘,矿体产状280°~315°∠67°~80°,不连续,呈透镜状、扁豆状,在纵向上及垂向上矿体产状均变化较大,形态主要随断层错动形成的虚脱空间形态的变化而变化。金矿呈透镜状、板状、长条状,品位1.05~3×10^(-6),厚度0.78~3.20 m不等,锑品位1.14%~3.41%,平均厚度1.26 m。金矿对岩石有一定的选择性,主要以铅锌铜硫化矿物包裹金形式赋存于断层破碎带中的硅化角砾岩中。锑矿不具规模,多分布于两断层交汇处呈鸡窝状产出,即在构造复杂流体流通较好且有利的容矿空间成矿,呈浸染状、放射状、针状,锑矿与金矿局部伴生,局部独立存在。The Jinyagou gold-antimony deposit in the northern of South Qinlingorogen, is located in Minxian - Xihe-Yawan-Liangdang gold, mercury, antimony sub-metallogenic belt of the northern of South Qinlingorogen. Ore（mineralized） body, about lkm, which is controled by a northeast high angle fault（F1）, mainly occur in the footwall of the fault that the southeast footwall. The orebodies which are mainly controlled by the faults are lenticular discontinuous distribution with occurrence of 280°-315°∠67°-80°.The gold orebody is lenticular, plate, strip shape distribution with grade（1.05-3×10-6） and thickness（0.78-3.20 m）, while Antimony ore grade is 1.14%-3.41% with average thickness of 1.26 m. The gold deposits have a certain selectivity of the rocks, mainly in the form of package gold within lead, zinc and copper sulfide mineral, which are occurrence in silicified breccia in the fault fracture zone. Antimony has no scale, distributed in the junction of the faults where is good for complex fluid circulation and favorable ore deposit space with occurrence in the henhouse, the ore was disseminated, radial, acicular, associated with gold deposits or independent existence.

关 键 词：西和县 金锑矿 构造 成因 

分 类 号：P618.51[天文地球—矿床学]