新疆天宇杂岩体中超基性岩Cu、Ni含矿性评价

ULTRABASIC ROCKS'CU,NI ORE-BEARING EVALUATION INTIANYU COMPLEX ROCK BODY OF XINJIANG

天宇矿区广泛发育以橄榄岩、橄辉岩、辉石岩、辉长岩、闪长岩为主的基性超基性岩体。研究表明:该区杂岩体中超基性岩具有碱性富铁质基性超基性岩石化学特征,具有Cu、Ni、S、Bi等元素高丰度和Se、Te、Zn、F等元素明显异常的微量元素地球化学特征;Cu、Ni、Co、S等成矿元素高丰度说明成矿与岩浆活动有密切成因关系;成矿物质来源地幔;碱性富铁质基性超基性岩体的含矿性取决于Cu、Ni、S成矿元素的丰度。

Tianyu mining area extensively develop peridotite, peridotite- pyroxenite, pyroxenite, gabbro, diorite which are the basic and ultrabasic rocks. Research shows that： the area＇s complex rock body have alkaline super-rich iron＇s geochemistry characteristics, Cu, Ni, S, Bi and so on with high abundance and Se, Te, Zn, Fetc trace elements have obviously abnormal geochemistry feature ; Cu, Ni, Co and S ore-forming elements are possessed high abundance which accounts for ore-forming and magmatic activity are closely causes of relation with them ; ore-forming of sources derived from the mantle ; alkaline the super-rich iron＇s basic and ultrabasic rocks＇ ore-bearing depend on Cu, Ni and S the ore-forming the elements＇the abundance.