摘要
本文研究了不同成因的14个磁铁矿的标型特征(包括形态、化学成分、微量元素、共生组合,显微硬度、比重、反射率、晶胞参数、比磁化率、磁饱和强度和居里点等)。根据磁铁矿的产状和矿物学特征确定该矿含矿建造为火山-沉积富Mn,F.Ge.Ca.Mg的硅铁质建造。成矿物质与海底火山作用有关,成矿作用以胶体沉积作用为主,后经热变质作用,属火山-沉积变质矿床。最后确定了矿物学找矿标志并指出找矿方向。
Typomorphic characteristics of 14 magnetites of various genesis are studied. Their morphology, chemical composition, trace element,paragentic association and physical properties are described and compared. The genetic mineralogical study suggests.that the Makeng ore-bearing formation is of volcano-sedimentary silica-iron formation rich in Mn, F, Ge, Ca and Mg, The ore-forming material was in close association with submarine volcanism. Colloidal precipitation and subsequent thermal metamorphism were the main processes of ore-formation. Mineralogical criterions for iron ore prospecting are also discussed,
出处
《矿物岩石》
CAS
CSCD
1989年第1期26-39,共14页
Mineralogy and Petrology
