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Geochemistry of the Black Rock Series and Related Ni-Mo Deposit at Qingyangou Area in Qingling Mountain
详细信息   
摘要

This paper deals with geochemistry of the Qingyangou Ni-Mo deposit on the basis of the field work. The results indicate: 1) the contents of Mo, Ni, Ti, Cu, Pb, Zn, P and TOC are rich in the ore-bearing rocks; 2) the abundances of platinum group elements related to that of crust and mantle; 3) there exists greatly difference in the contents of REE elements in rocks; The samples are characterized by the slight negative or positive Ce anomalies, and distinct positive Eu anomalies, L-REE is enrichment relative to H-REE; 4) the character of hydrogen-oxygen isotope and geology shows that mineralizing fluid was made up of reconstructive intensively meteoric water, metamorphic fluid and little magmatic water; and 5) the homogenization temperature of primary inclusion in the quartz vein with Ni mineralization forming at the fore-middle stage is from 211.4 to 444.9 , and salinity (NaCleq) is from 7.02% to 19.21%. The molybdenite formed in high temperature because of its direct relation with graphitization. 

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