摘要
高家堡子大型金银多金属矿床是近年发现的新类型矿床。地球化学、稳定同位素和稀土地球化学等方面的研究表明，高家堡子金银多金属矿床是多成因复合矿床。元古宙时期，辽东裂谷收缩阶段，产生了火山喷流作用，形成了金银多金属矿源层；韧性剪切作用导致矿源层中分散的金、银、多金属元素产生活化、富集作用，形成了矿脉和矿层；印支—燕山期岩浆作用又使早期形成的矿源层或矿体进一步富集，最后形成矿床。因此，高家堡子矿床属韧性剪切－火山喷流沉积－中低温岩浆热液叠加型矿床。
Gaojiapuzi large scale Au Ag polymetallic deposit was recently found which was of a new type. Studies on geochemistry, stable isotopes and REE geochemistry showed that the deposit was a polygenic composite deposit. In Proterozoic, during contraction of Liaodong rift, volcanic spouting led to the forming of Au Ag polymetallic source beds; ductile shearing caused dispersed Au, Ag, polymetallic elements activating and enriching, leading to the forming of ore veins and ore beds. In Indosinian Yanshanian period, volcanism made the early stage of source beds or ore bodies more enriching, in the end the deposit formed. So Gaojiapuzi large scale Au Ag polymetallic deposit was of ductile shear volcanic spout sedimentary meso epi magmatic thermal superimposed type.
基金
"八五"重点成矿区带找矿勘查项目
关键词
金矿床
银矿床
多金属矿床
成因机制
Qingchengzi Gaojiapuzi, Au Ag deposit, Ductile brittle shearing, Volcanic spouting, Magmatic thermal, Composite deposit
