浙江八面山新型萤石矿床成矿期次及成矿作用  

METALLOGENIC EPOCH AND METALLOGENESIS OF BAMIANSHAN FLUORITE DEPOSIT IN ZHEJIANG PROVINCE

作　　者：徐少康[1] 夏学惠[1] 闫飞[1] 严生贤 郑兴泉 

机构地区：[1]中化地质矿山总局地质研究院,河北涿州072754 [2]中化地质矿山总局浙江地质勘查院,浙江杭州310000

出　　处：《化工矿产地质》2011年第4期215-222,共8页Geology of Chemical Minerals

摘　　要：八面山萤石矿床成矿期次有4次。第1和4期次形成的矿体规模大,数量多,构成矿床的主体;第3期次仅形成了一个规模不大的矿体;第2期次没有形成独立的矿体,仅形成了厚度不大的含矿岩脉。各期次形成的矿石特征及化学成分、成矿温度、成矿介质和成矿物质来源不尽相同,有的差异明显。成矿作用类型有3种:热液充填型、热水沉积型及气液蚀变型,以前者为主。热液充填作用发生于第1和4期次成矿过程,热水沉积作用发生于第1、3和4期次成矿过程,气液蚀变作用仅发生于第2期次成矿过程。控制成矿作用类型的主要因素为:矿物的饱和度,温度下降速率,相对稳定且较宽敞的低温环境,过高的温度,成矿空间的产状。There are four metallogenic epochs in Bamianshan fluorite deposit. The first and the fourth epochs, with larger size, more amounts, are the leading body of the deposit. However, a small ore body formed in the third epoch, while none of absolute ore body formed in the second epoch, only formed some ore bearing dikes. There are different in the ore characteristics, chemical component, metallogenic temperature, medium and material source in each epoch. Three metallogenic types can be found in the deposit： hydrothermal filling process -the main type, hot-water sediment and gas-liquid corrosion. The hydrothermal filling process ocurred in the first and the fourth epochs, the hot-water sediment ocurred in the first, the third and the fourth epochs, the gas-liquid corrosion ocurred only in the second epoch.. The main factors controlled the metallogenic types are the saturation of the mineral, temperature droop, comparatively steady and much spacious low temperature condition, exorbitant temperature and occurrence of the ore forming space.

关 键 词：八面山萤石矿床 4个成矿期次 3种成矿作用 浙江常山 

分 类 号：P619.215[天文地球—矿床学]