摘要
岩浆型Cu-Ni-PGE硫化物矿床是指与镁铁质-超镁铁质岩浆成矿作用有关的、以硫化物为主的矿床.图拉尔根铜镍矿属于岩浆熔离贯入型矿床,辅有就地熔离、热液叠加成矿多重作用形成的矿床.Ⅰ号岩体以全岩矿化为特征,可分为角闪橄辉岩、角闪辉石岩、橄榄辉石岩和辉长岩4个岩相,块状矿化和海绵陨铁特富矿体主要产在角闪橄辉岩相中.矿石中磁黄铁矿-镍黄铁矿-黄铜矿共生为其主要特征,此外,金属矿物还有磁铁矿及少量钛铁矿.脉石矿物主要有普通角闪石、蛇纹石、透辉石、氟钠透闪石-钙镁闪石及绢云母、白云母、方解石、磷灰石.通过室内大量工作,对本矿床矿石矿物、结构特征及成矿过程进行了总结,研究认为,原始岩浆在深部岩浆房中发生了熔离作用和重力分异,形成矿体和不同岩相.图拉尔根铜镍矿体分异侵位之后产于比重较大的角闪橄辉岩相带内,整个铜镍硫化物矿床的形成存在一个由岩浆到热液的演化系列和不同阶段的富集成矿.
Magma-Cu-Ni-PGE sulphide deposits is related to mafic-ultramafic magma mineralization containing sulphide mainly .Tulaergen Cu-Ni sulphide deposits is magmatic differentiated deposits associated with Early Permian mafic-ultramafic complexes of post-collision stage. The I deposits have a main features with whole Mineralization rock, which can be divided into four rock facies：hornblende peridotite,pyroxene peridotite,hornblende pyroxenite and gabbro. Ore minerals are domi-nated by pyrrhotite, pentlandite, chalcopyrite and pyrrhotite. Through a lot of work, the article do a detailed summary of the mineral features of ore deposits , structural characteristics and the ore-forming process.it＇s considered that new magma is melting away from the role of the the original magma in deep magma by gravity and differentiation,forming ore bodies Differentiation and e different lithofacies. The ore are in facies：hornblende .The whole Cu-Ni sulfide deposit formation contain series from magmatic to hydrothermal to the evolution and ore enrichment in the different stages.
出处
《新疆地质》
CAS
CSCD
北大核心
2009年第2期136-140,共5页
Xinjiang Geology
基金
"十一五"国家科技支撑计划重点项目东天山-北山成矿带整体研究与找矿靶区优选课题(2007BA25B04)资助
