【】甘肃省金山金矿地质特征及控矿因素.doc

,杨贵生,王刚刚,周晓亮,李嘉(甘肃省地质矿产局第一地质勘查院,甘肃天水741020)摘要:为了研究金山金矿的控矿因素及矿床成因,在研究成矿地质背景的基础上,结合野外地质及前人研究成果,采用地质,地球化学综合分析的方法,对矿区内地层,构造,岩浆岩,矿体特征,稳定同位素,成矿温度压力,:金矿严格受断裂控制,断裂是成矿的主导因素;岩浆岩对成矿具有制约作用,岩体外接触带1~5km内的断裂构造是最佳的赋矿位置;地质背景,含金建造与成矿关系密切;矿床形成经历了沉积成岩期,变质成矿期,岩浆热液成矿期,,具有物质多来源,成矿多阶段特点,其成因类型属地下热(卤):金矿床特征;控矿因素;成因;金山;甘肃省中图分类号::A文章编号:16726561(2008)01—0032—06'GeologicalCharacteristicandOre-ControllingFactorsofJinshanGoldDeposit,GansuProvinceYANGGen—sheng,YANGGui—sheng,WANGGang—gang,ZH0UXiao—liang,LIJia(,GansuProvinceBureauofGeologyandMineralExploration,Tianshui741020,Gansu,China)Abstract:Toprobetheore—controllingfactorsandoriginofJinshanGoldDeposit,onthebasisofstudyingthegeologicalbackgroundofminerallization,prehensivegeologicalandgeochemicalmethod,thispaperanalyzesthestrata,structure,magmaticrock,ore—bodycharacter,stableisotop,temperature,,themagmaticrockrestrictstheminerllization,thefaultwiththerangeof1~,thegeologicalbackgroundandgold—,theyare,sedimentary-icstage,metamorphicminerallizaionstage,magma——factors,poly—mattersources,multi-stagesofminerallizaion,anditisapercolatedandfiltratedgolddepositbyundergroundhot(thickgravy):golddepositcharacteristic;ore—controllingfactor;origin;Jinshan;GansuProvince0引言近年来在甘肃礼(县)一岷(县)成矿带上开展了多项地质大调查和科研工作,取得了重大进展,发现了金山,礼坝,杜沟,三人沟,罗坝,火吉坪,马泉等--~tt新的金矿床(点)和金矿化点及物化探异常,取得了大量突破性成果….随着国家对矿产资源的重视,礼(县)一岷(县)成矿带又受到地学界的关注,礼县金矿