沉积与特提斯地质Issue(3)：75-80,6.
四川里伍铜矿床磁黄铁矿成因矿物学研究
Genetic mineralogy of pyrrhotite from the Liwu copper deposit in western Sichuan
摘要
Abstract
The Liwu copper deposit is a medium-sized copper-rich copper deposit hosted in the Jianglang metamorphic core complex dome in Jiulong, western Sichuan. The present paper deals with the chemical compositions and structural types of pyrrhotite from the Liwu copper deposit based on the microscopic examination, energy spectrum analysis and X-ray diffractional analysis. The analytical results show that there occurs only hexagonal pyrrhotite in the inner part of the copper deposit, with the Fe atomic percentages ranging between 48. 63% and 47. 99% and metallogenic temperatures higher than 304℃. On the contrary, both the hexagonal and monoclinic pyrrhotite are observed in the outer part of the copper deposit, with the Fe atomic percentages ranging between 45 . 97% and 47 . 54% and metallogenic temperatures lower than 254℃. It is inferred from the typomorphic characteristics of pyrrhotite and geological characteristics of the copper deposit that the Liwu copper deposit resulted from the activation caused by deformation and metamorphism in original source beds, and superimposed reworking of moderate-to high-temperature hydrothermal solutions during the Yanshanian.关键词
成因矿物学/磁黄铁矿/里伍铜矿床/四川Key words
genetic mineralogy/pyrrhotite/Liwu copper deposit/western Sichuan分类
天文与地球科学引用本文复制引用
陈道前,孙传敏,吴逍,侯兰杰,鲜海洋..四川里伍铜矿床磁黄铁矿成因矿物学研究[J].沉积与特提斯地质,2015,(3):75-80,6.基金项目
四川省九龙县里伍铜矿接替资源勘查(200851022) （200851022）
