新疆金水泉金矿床地质特征及成矿模式探讨

The Discussion of Geological Characteristics and Metallogenic Model of Jinshuiquan Gold Deposit in Xinjiang

金水泉金矿是近年来新发现的金矿床,研究程度较高。矿床位于卡拉麦里成矿带西段,矿体受卡拉麦里与清水-苏吉泉大断裂控制明显[1]。成矿物质主要来自遭变质的火山岩、火山碎屑岩和蛇绿岩块,韧性剪切带及地层起主导控矿作用。矿石矿物有黄铁矿、褐铁矿、毒砂及少量黄铜矿、孔雀石,赋矿围岩主要为千枚岩、片理化、千枚岩化凝灰岩。蚀变以硅化、绿泥石化、绢云母化、碳酸盐化为主。矿体与围岩为渐变过程,界线不明显。石英(微晶)-黄铁矿-毒砂成矿阶段为主要成矿期。据矿床成矿地质背景、控矿条件、矿石矿物组合等,初步认为金水泉金矿属与韧性剪切带有关的中、低温变质热液型金矿床。在已有研究成果基础上,总结找矿标志,建立金水泉金矿成矿模式。

Jin Shuiquan gold deposit lies to the western kalamaili metallogenic belt,ore boby is obviously controlled by Kalamaili and Qing Shui-Su Jiquanfault,metallogenic material mainly comes from volcanic rocks,volcanic clastic rocks and ophiolite blocks,ductile shear zone and strata plays a dominant ore-controlling role.Ore minerals are composed of pyrite,limonite,arsenopyrite and a few chalcopyrite,malachite.Ore wall rock are composed of phyllite,phyllitization tuff,alteration are mainly dominated by silicification and chloritization,sericitization and carbonatization.ore body and wall rock is gradient process,the boundary is not obvious.Quartz（microlite）-pyrite-arsenopyrite mineralization stage is the main metallogenic period.According to the metallogenic geological background,ore-controlling conditions,ore mineral combination factors,it is thought that Jin Shuiquan gold deposits belongs to the middle and low temperature metamorphic hydrothermal type gold deposits related to ductile shear zone.Finally based on the results of the study,summed up the prospecting marks and established metallogenic model for Jin Shuiquan gold deposit.