河南周庵铂族—铜镍多金属矿地电化学找矿研究

为了更好地研究和解决河南南阳地区寻找隐伏矿的问题,文章有针对性地介绍在该矿区开展地电提取(CHIM)、土壤离子电导率(Con)、土壤热释汞(Hg)等多种新方法找矿预测试验,在测区内共圈出8个地电提取Cu、7个地电提取Ni异常,以及7个电导率异常、11个土壤热释汞(Hg)异常。并结合矿区元素共生组合和成矿作用,在测区内划分了3类4个具有找矿前景的综合异常靶区,其中Ⅰ类靶区1个、Ⅱ类靶区2个、Ⅲ类靶区1个,初步建立了该地区地电化学理想的找矿模型。

Platinum-group Elements Geochemistry of the Yangliuping Magmatic Ni-Cu-PGE Sulfide Deposit:Implications of Its Genetic Link with the Extrusive Basalts

Primitive mantle normalized Platinum group elements (PGE) concentration patterns for the Zhengziyanwo intrusion and Dashibao Formation basalts are of positive slope, similar to most of the world class magmatic Ni Cu PGE sulfide deposits. Characters of this intrusion and its related ores and Dashibao Formation basalts are their negative Pt anomaly and high concentration of Rh relative to Pt and Pd, facts being interpreted to be the results of crystallization and fractionation of Pt alloys and spinel phase free crystallization history for the magma, respectively. PGE parameters of the Dashibao Formation basalts are consistent with the general trend of those found for the Zhengziyanwo intrusion, and this might infer a genetic link between them.