甘肃东海金矿床地球化学特征  

Geochemical features of Donghai gold deposit, Gansu

作　　者：林森[1] 

机构地区：[1]甘肃有色地质勘查局四队,甘肃张掖734012

出　　处：《黄金地质》2004年第3期56-60,共5页Gold Geology

摘　　要：东海金矿床位于甘肃北山重要的Au,Ag多金属成矿带上,具长期活动特征的花牛山—察客尔呼都格压扭性断裂横贯成矿带,成矿的有利位置为大断裂及次一级断层、层间裂隙(破碎蚀变带,局部夹有石英脉),断裂控矿特征十分明显。原生晕以亲硫元素组合为主,亦有亲氧元素。金矿石以硫化物型为主,氧化物型次之,其元素组合以成矿元素Au,Ag,Pb,Zn和亲硫元素Cu,Sb,Mo为主,也有亲氧元素W,Sn。具有深部断裂剪切、挤压带地球化学元素组合特征。The Donghai gold deposit locates in the Au-Ag-polymetallic mineralization belt of Beishan,Gansu.The long-active Huaniushan-Co-Chakeerhuduge compressive shear fault across the mineralization belt. The favorable situation of mineralization is the major fault and its secondary fault and interlayer fracture (fracture altered zone,partly quartz vein); the character of fault controlled mineralization is obvious.The primary halo is major thiophile element assemblage, minor oxyphile element.The gold deposit type is major sulphile type the oxidized ore is in the secondly situation.The association of element is major the mineralized element (Au, Ag, Pb and Zn) and thiophile element (Cu, Sb and Mo), Oxyphile element (W and Sn) can found too. The geochemical element association shows the features of deep fault shear and compression zone.

关 键 词：金矿 多金属成矿带 原生晕 甘肃 

分 类 号：P618.51[天文地球—矿床学] P632[天文地球—地质学]