安徽沙溪斑岩铜(金)矿有关岩体矿物学研究  

MINERALOGICAL STUDY ON THE PORPHYRIES IN SHAXI PORPHYRY COPPER (GOLD) DEPOSITS, ANHUI PROVINCE

作　　者：徐文艺[1] 傅斌[1] 任启江[1] 胡文瑄[1] 

机构地区：[1]南京大学地球科学系,南京210008

出　　处：《矿物学报》1997年第1期86-92,共7页Acta Mineralogica Sinica

基　　金：国家自然科学基金

摘　　要：对沙溪斑岩铜（金）矿矿区有关岩体斑晶矿物的显微特征和矿物化学研究显示：含矿斑岩成岩物质主要源于地幔，但在岩浆上侵过程中受到壳源组分混染，其暗色矿物富Mg、Ti；无矿斑岩以壳源为主，暗色矿物富Fe；含矿斑岩与无矿斑岩结晶动力学环境亦有所差别。Microfeatures and mineral chcmistry of the phenocrysts in the porphyries of Shaxi ore deposits have been studied. It is shown that the mineralizing materials of the porphyries comes from the upper manlfIe, contaminated by crlJst mass during ascending, and its melanes are rich in magnesiun and titanium; the material of barren porphyries comes from the deep crust and its rnelanes are rich in iron. The magma-crystallization envlronment of mineralized porphyries is also different from that of barren ores.

关 键 词：矿物显微特征 铜矿 金矿 斑岩 岩体矿物学 

分 类 号：P588.13[天文地球—岩石学]