陕西煎茶岭超基性岩与金矿床成因关系  

THE GENETIC RELATIONSHIP BETWEEN THE ULTRABASIC ROCK AND GOLD DEPOSIT IN JIANCHALING, SHAANXI

作　　者：张复新[1] 汪军谊[1] 

机构地区：[1]西北大学地质系

出　　处：《黄金地质》1999年第2期14-20,共7页Gold Geology

摘　　要：煎茶岭金矿床属于与超基性岩有成因联系的微细浸染状构造蚀变岩型金矿床。该超基性岩沿超壳断裂侵位（９２７Ｍａ），是金矿形成的矿源岩。含矿超基性岩在强烈的构造变形作用下，发生彻底的退化蚀变（３８８．７Ｍａ）。经滑石－蛇纹石化，进而碳酸盐化，导致微量金解离。在后期活动性断裂控制下，形成含金硫化物矿化－硅化－碳酸盐化蚀变岩体的就位。含金蚀变岩与金矿体微量元素组合、稀土元素。Jianchaling gold deposit belongs to micro disseminated tectonic altered rock type, which has genetic relationship with ultrabasic rock. Jianchaling ultrabasic rock (927 Ma) intrudes along translithospheric fracture, and it is source rock of the gold deposit. The retrograde alteration (388 7 Ma) of the ore bearing ultrabasic rock has occurred as a result of the strong tectonically deformation. After the talc serpentinization and carbonation, micro gold has been separated. Under the cotroll of post active fault, gold bearing sulfide mineralization silication carbonation altered rock has been emplaced. In the composition of the microelements, REE and stable isotopes, the gold bearing altered rock and the gold orebody have obvious inheritance to the ultrabasic rock.

关 键 词：金矿床 超基性岩 成矿作用 陕西 矿床成因 

分 类 号：P618.510.1[天文地球—矿床学] P588.125[天文地球—地质学]