郭玉乾, 方维萱, 童祥, 路红记. 云南个旧新山矽卡岩钨多金属矿地球化学特征及找矿意义[J]. 地质通报, 2020, 39(11): 1827-1839.
    引用本文: 郭玉乾, 方维萱, 童祥, 路红记. 云南个旧新山矽卡岩钨多金属矿地球化学特征及找矿意义[J]. 地质通报, 2020, 39(11): 1827-1839.
    GUO Yuqian, FANG Weixuan, TONG Xiang, LU Hongji. Geochemical characteristics of W-Sn-Mo-Bi-Cu-bearing Manganoan skarn and petrogenesis and mineralization of the Xinshan tungsten polymetallic deposit in Gejiu, Yunnan Province, China[J]. Geological Bulletin of China, 2020, 39(11): 1827-1839.
    Citation: GUO Yuqian, FANG Weixuan, TONG Xiang, LU Hongji. Geochemical characteristics of W-Sn-Mo-Bi-Cu-bearing Manganoan skarn and petrogenesis and mineralization of the Xinshan tungsten polymetallic deposit in Gejiu, Yunnan Province, China[J]. Geological Bulletin of China, 2020, 39(11): 1827-1839.

    云南个旧新山矽卡岩钨多金属矿地球化学特征及找矿意义

    Geochemical characteristics of W-Sn-Mo-Bi-Cu-bearing Manganoan skarn and petrogenesis and mineralization of the Xinshan tungsten polymetallic deposit in Gejiu, Yunnan Province, China

    • 摘要: 采用矿物地球化学岩相学研究思路,对个旧新山矿段含钨矽卡岩原生地球化学异常进行了研究。新山矿段钨多金属矿发育W-Sn-Mo-Bi-(Au)-Cu-(Ag)-Mn综合异常,与燕山期黑云母花岗岩接触带含钨矽卡岩关系密切,钨矿单一经济品位和综合经济品位指标圈定矿体可为多组分低品位钨矿体工业化综合利用提供总体解决方案。富锰钙铝榴石-钙铁榴石、富锰次透辉石-钙铁辉石、富锰绿钙闪石、含锰富水矽卡岩矿物等新山矿段钨多金属矿储矿岩相为锰质矽卡岩的内在矿物地球化学机制。W-Sn-Mo-Bi-Cu-Mn地球化学岩相学示矿信息提取原理是含钨富锰矽卡岩相富集了含锰矽卡岩矿物、白钨矿、钼钨钙矿、钨锰铁矿、辉钼矿、黄铜矿、辉铋矿、硫碲铋矿、自然铋、锡石等矿。Sn、Cu、Bi(Au)具有综合回收利用价值。

       

      Abstract: Geochemical anomalies of W-Sn-Mo-Bi-Cu -bearing skarn in Xinshan ore block of Gejiu were studied with the idea of mineral geochemical petrography. The W-Sn-Mo-Bi-(Au)-Cu-(Ag)-Mn comprehensive geochemical anomaly in the tungsten polymetallic ore of Xinshan ore block is closely related to the manganoan skarn which is developed in the contact zone of Yanshanian biotite granite. The orebody delineated by comprehensive economic index of tungsten polymetallic ore will improve the utilization of low-grade tungsten orebody. The sorosilicates such as grossularite, andradite, salite, hedenbergite and hastingsite, which are rich in manganese, formed the manganoan skarn. The wide spread isomorphic replacement of Mo3+→W3+ in scheelite and Mn2+→Fe2+ in wolframite included in skarn and the mineral assemblage of molybdenite formed manganoan W-Mo-Mn indicator elements. Chalcopyrite, bismuthinite, joseite and bismuth can also be recovered.

       

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