新疆东天山康古尔金矿黄铁矿热电性与微量元素特征及其地质意义  

Thermoelectric Characteristics and Trace Element Characteristics of Pyrite from Kangguer Gold Deposit in Eastern Tianshan of Xinjiang and Its Geological Significance

作　　者：许杰辉 葛文胜[1] 邢德超 陈晓东[1] 宋文杰[2] 余文林[1] 张伟[1] 吴生军[2] 

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]新疆地质矿产勘查开发局第一地质大队,新疆昌吉831100

出　　处：《现代地质》2015年第3期542-552,共11页Geoscience

基　　金：中国地质调查局地质调查项目(12120113085300)

摘　　要：康古尔金矿是新疆东天山成矿带严格受韧-脆性剪切带控制的金矿床。基于成因矿物学理论,采用矿物学和矿物地球化学方法对康古尔金矿床L2-2东矿段载金矿物黄铁矿的标型特征进行了研究。结果表明：该金矿中黄铁矿导电类型主要表现为N型、N-P型和P-N型,从矿体顶部到底部（1 000→400 m）P型热电系数出现率呈现明显减少的趋势（37.04%→9%）;通过热电参数计算得到矿床的形成温度为75.43~382.79℃,集中在80~340℃;结合P型黄铁矿出现率和金品位等值线的垂直纵投影图,得出22号勘探线400 m以下及其西部具有较好的找矿前景;分析黄铁矿微量元素组合（As＋Sb＋Se＋Te、Cu＋Pb＋Zn和Co＋Ti＋Ni＋Cr）等值线图,可知在400 m标高以下,22勘探线和14勘探线具有良好的找矿前景。上述黄铁矿标型特征对于康古尔金矿深边部找矿具有重要指导意义。The Kangguer gold deposit is controlled by brittle ductile shear zone in Eastern Tianshan,Xinjiang.Based on genetic mineralogy theory,the pyrite which is main mineral loaded gold has been studied systematically on the typomorphic characteristics by the mineralogy and mineral geochemistry methods. The results revealed that thermoelectric properties of pyrites are mainly of the N type,N-P type and P-N type. From the top of the orebody to the bottom（ 1,000 m→ 400 m）,P-type thermoelectric coefficient occurrence rate shows a marked decline（ 37. 04% →9%）. The calculations of pyrite thermoelectric coefficient indicate that the temperature of the deposit is about 75. 43- 382. 79 ℃,with most values in the range of 80- 340 ℃. By analysing the contour vertical projections of gold grade and occurrence rate of P-type pyrite in the L2- 2east mine section of Kangguer gold deposit,it can be inferred that there is good exploring prospect below 400 m elevation of line 22,also in the west of line 22. By studying contour vertical projection of trace elements assemblies（ As ＋ Sb ＋ Se ＋ Te,Cu ＋ Pb ＋ Zn and Co ＋ Ti ＋ Ni ＋ Cr） in pyrites,it suggests that great prospecting exists under 400 m elevation of the exploration line 22 and 14. All the typomorphic characteristics of the pyrite mentioned above are very significant for deep gold prospecting in Kangguer gold deposit.

关 键 词：黄铁矿 热电性 标型特征 康古尔金矿 东天山 

分 类 号：P578.292[天文地球—矿物学]