摘要
金宝山超镁铁侵入岩赋存有超大型硫化物铂族元素矿床。单辉橄榄岩是岩区最主要的含矿岩石类型。根据单辉橄榄岩的矿物学、岩石学、岩石化学及微量元素地球化学特征 ,探讨岩浆的结晶分异演化过程 ,提出岩体的形成与岩浆结晶分异有关 ,母岩浆成分为拉斑质玄武质岩浆。岩体高镁、高稀土总量 ,以及橄榄石与辉石的结构特征显示岩体是橄榄石、铬尖晶石等矿物与残留岩浆混合形成。
There are larger scale sulfide PGE deposits in mafic and ultra mafic intrusion s in the Jinbaoshan area of Yunnan.Clinopyroxene bearing peridotites are the ma in rocks there. From the mineralogy and petrology data, it is proposed that the formation of the plutons is closely related to the fractionation crystall ization of tholeiite basalt magma in the Jinbaoshan area. High concentrations of MgO, much high ∑REE and structures of olivine and clinopyroxene in the intrusi ons, indicate that they resulted from mixing of olivine, chromite and magmatic r esidues.
出处
《矿物学报》
CAS
CSCD
北大核心
2003年第1期63-69,共7页
Acta Mineralogica Sinica
基金
中国科学院知识创新工程项目 (KZCX2 10 1)
国家自然科学基金项目 (批准号 :40 2 740 2 7)
