摘要
磁海铁矿床位于东疆火山岩区,矿体产于基性次火山岩体内,次火山水热活动导致铁矿床的形成。次火山水热活动有一系列不同类型,并具一定空间分布和时间演化规律的蚀变岩响应,主期成矿作用发生在中高温压硅酸盐蚀变与中低温压硫化物蚀变之过渡阶段。硅酸盐蚀变岩中的“石榴子石-透辉石”组合与传统理解的“夕卡岩”内的相同组合名同实异。可把此矿床定名为次火山水热石榴子石-透辉石-磁铁矿矿床。
The Cihai iron deposit is located in volcanic area of eastern Xinjiang,the ore bodies are distributed in the basic subvolcanic bodies and the subvolcanic hydrothermal processes led to the forming of the deposit.The subvolcanic hydrothermal processes show a series responses of alteration rocks with some regularity of space and time evolutions,the main metallogensis was between the silicate alterations (high middle temperature and prssure) and sulfide alterations (low temperature and pressure).The assemblage of garnet diopside in the silicate alteration rocks is different from that in the skarn of traditional idea.The ore deposit can be named as subvolcanic hydrothermal garnet diopside magnetite deposit.
出处
《新疆地质》
CAS
CSCD
1999年第3期79-85,共7页
Xinjiang Geology
基金
冶金部西北地勘局科研协作项目
关键词
磁海铁矿床
成矿无机化学
火山水热作用
Cihai iron deposit
metallogenic inorganic chemistry
volcanic hydrothermal processes
