【摘要】：本文對吉林紅旗嶺富家礦床中的礦石礦物進(jìn)行了系統(tǒng)的礦物化學(xué)和硫同位素研究。礦石礦物共生組合主要為磁黃鐵礦(Po)-鎳黃鐵礦(Pn)-黃銅礦(Cp)-黃鐵礦(Py),其中Po有單斜磁黃鐵礦(Mpo)、六方磁黃鐵礦(Hpo)和六方隕硫鐵(Tr)相之分,并以Mpo(低溫相)為主;Pn有Pn(1)→Pn(2)→Pn(3)的演化趨勢;Py有Py(1)→Py(2)→Py(3)→Py(4),均為同一礦化期的不同世代的產(chǎn)物。利用Py-Po礦物對計(jì)算出礦石礦物的結(jié)晶溫度介于500~300℃之間,大致結(jié)晶順序?yàn)镻n→Po→Cp→Py。硫同位素特征表明,δ~(34)S值變化較小,介于 4.70‰~+2.40‰之間,δ~(34)S值呈塔式分布,集中分布于 2.5‰~+2.5‰之間,δ~(34)S值略高于地幔硫(0±2‰),并有δ~(34)S_(Po)δ~(34)S_(硫化物)δ~(34)S_(Py)的特征,表明硫來源于地幔,僅有微弱的地殼物質(zhì)混染,且成礦熔體中硫已達(dá)到平衡。結(jié)合野外礦體特征和礦石組構(gòu)特征,富家礦床的成礦物質(zhì)來源于上地幔;成礦作用方式以巖漿熔離作用為主,兼具巖漿期后熱液疊加成礦作用;礦床為通道式成礦,屬于深部熔離-貫入式成因。
[Abstract]:The mineral chemistry and sulfur isotope of the ore minerals in the Fujia deposit of Hongqiling, Jilin Province have been studied systematically in this paper. The ore mineral symbiotic assemblage is mainly composed of (Po) pyrrhotite (Pn) chalcopyrite (Cp) pyrite (Py), in which Po has (Mpo), hexagonal pyrrhotite (Hpo) and hexagonal meteorite (Tr) phase. The evolution trend of PN (1) Pn (2) Pn (3) is mainly Mpo (low temperature phase). Py (1) Py (2) Py (3) Py (4) is the product of different generations of the same mineralization period. By using Py-Po mineral pairs, the crystallization temperature of ore minerals is between 500 鈩，

本文編號：2192861