吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (3): 754-768.doi: 10.13278/j.cnki.jjuese.20160327
齐钒宇1,2, 张志1, 祝新友3, 李永胜1,4, 甄世民1,4, 公凡影1,4, 巩小栋5
Qi Fanyu1,2, Zhang Zhi1, Zhu Xinyou3, Li Yongsheng1,4, Zhen Shimin1,4, Gong Fanying1,4, Gong Xiaodong5
摘要: 宝山铜铅锌多金属矿床位于我国南岭成矿带中段北缘,是南岭成矿带中的重要类型之一。宝山矿床具有明显的水平分带性,即以花岗闪长斑岩为中心的铜钼矿化,周边是铅锌银矿化。本文通过对宝山铜铅锌多金属矿床中的石榴子石、透辉石、黄铁矿、闪锌矿等矿物进行矿物学研究及电子探针测试分析,归纳总结出:宝山铜铅锌多金属矿床成矿期次为矽卡岩阶段、退变质与氧化物阶段、硫化物阶段;矿床石榴石端员组分总体以钙铁榴石(23.48%~90.39%)为主,其次为钙铝榴石(5.81%~71.27%);辉石的成分端员以透辉石(Di61-95)为主,石榴子石成分和透辉石组分与世界上典型矽卡岩型铜矿的石榴子石和透辉石组分十分相似,属于典型的矽卡岩型铜矿床。从宝山铜铅锌多金属矿床硫化物中黄铁矿、闪锌矿矿物成分组成可以看出,该矿床硫化物为岩浆热液成因,并呈现出北东向比南西向成矿温度高的特征。
中图分类号:
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