摘要
杨柳坪铂镍铜硫化物矿集区中分布有许多成因相似的铜镍硫化物矿床,本文在野外地质调查和镜下鉴定的基础上,通过电子探针成分测试,对四川省丹巴县竹子沟铜镍铂矿床矿石矿物成分作了详细研究。根据矿物共生组合特征,将成矿过程划分为岩浆熔离成矿期、岩浆热液成矿期和表生风化期;根据成矿作用,矿体可分为贯入型和分异型矿体;通过矿物成分晶体化学式计算,阐述了矿物的赋存状态和成因;最后结合矿床产出的大地构造环境、构造控矿等特点分析,认为丹巴竹子沟铂镍矿床为典型的岩浆熔离型矿床。
There are many Cu - Ni sulphide ore deposits of identical genesis occurring in the Yangliuping platinum - nickel - copper sulphide ore distrier in Siehuan Prnvinee. Based on geologieal surveys and observations under microscope, using eleetron probe analysis, this work made a detailed study nn the mineral composition of ores from the Zhuzigou Cu - Ni - PGE ore deposit of this district. The mineral paragenesis suggests that the ore - fnrming proeesses can be divided into the nmgmatie liquation ore - forming stage, magmatie - hydrothermal ore - fonning stage and supergene weathering period. The ore hodies can be e.lassified into the penetration type and differentiation type. Through calculation af crystal chemical formula, this work elucidates mineral neeurrenee and genesis. Finally, combined with the tectonie setting and ore - controlling structure analysis, it is concluded that this deposit is a typical magmatie liquatinn one.
出处
《地质与勘探》
CAS
CSCD
北大核心
2012年第6期1109-1117,共9页
Geology and Exploration
基金
四川省地勘局重点科技项目四川省竹子沟铂镍矿成矿规律成矿模式研究资助
关键词
丹巴县
竹子沟
铂镍矿床
赋存状态成
矿期
Danba county, Zhuzignu, platinum nickel deposit, oeeurrence, ore- forming stage
