摘要
云南麻栗坡县新寨锡矿床控矿因素较复杂,早期加里东-印支期变质作用使该区含锡丰度值较高的下寒武统田蓬组中的期滇东成矿物质初步富集,更重要的是晚期燕山期花岗岩浆侵入,形成的岩浆成矿热液迭加上了早期初步富集的矿化,在压应力作用下,沿层间构造破碎带之有利的构造部位,发生充填-交代,最终长期演化形成了特色的矽卡岩型矿床。
The ore control factor of Xinzhai Sn deposit in Malipo,Yunnan is complicated.The preliminary concentration of metallogenetic material in Lower Cambrian Tianpeng Formation with high Sn abundance by the early Caledonian-Indosinian metamorphism in E Yunnan.More importantly,the later Yansanian metallogenetic thermal fluid of granite intrusion superimposes the early preliminary concentration of metallogenesis and the filling and metasomatism take place at the advantageous place of structure fracture zone under the agent of pressure.At last,the special skarn deposit is formed in the long period of evolution.
作者
李卿
刘相琴
周南
LI Qing;LIU Xiang-qin;ZHOU Nan(Geological Team 306,Yunnan Bureau of Nonferrous Geology,Kunming 650217)
出处
《云南地质》
2019年第1期92-98,共7页
Yunnan Geology
