摘要
早加里东期拗陷区沉积形成矿源层,晚加里东-印支期区域变质作用、混合岩化作用使锡质初步富集,后期热液叠加淬取使成矿元素得以重新活化转移到热液中,成为含矿热液(矿浆),运移到适当部位聚集形成工业锡矿体。
The formation of ore deposit experienced 3 stages as follows ： 1. the ore sources bed was formed in the sediment of earlier Calidonian depression area; 2. the Sn was preliminarily con- centrated by later Calidonian -lndosinian metamorphism, migmatization; 3. the metallogenetic element was activated anew and then migrated into the thermal fluid by the superimposition and extraction of posterior hydrothermal activity, became the ore - bearing fluid （ ore pulp）, migrated to the suitable place, concentrated and formed the Sn industrial ore body when the medium conditions changed.
出处
《云南地质》
2008年第2期229-234,共6页
Yunnan Geology
关键词
热液叠加
变质改造
沉积
新寨锡矿
老君山滇东南
Superimposition of Thermal Fluid
Metamorphic Reformation
Sedimentation
Xinzhai Sn Deposit
Laojunshan, Yunnan
