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    西藏多龙矿集区拿若铜（金）矿床成矿元素空间分布规律及地球化学勘查模型

    Metallogenic element spatial distribution of the Naruo copper (gold) deposit in the Duolong ore concentration area of Tibet and its geochemical exploration model

      摘要
    • 摘要: 提要：拿若铜（金）矿床是多龙矿集区内继多不杂斑岩铜（金）矿、波龙斑岩铜（金）矿之后又一取得重大找矿突破的大型斑岩型矿床。作者以矿区探矿工程分析数据为基础，研究各成矿元素空间分布规律。成矿元素在垂向上的分带特征不明显，在平面上分带特征较显著，表现为自矿区中心ZK0001，向南西方向具有Cu+Au→Cu（Au、Ag）→ Cu（Ag、Au）→Cu（Ag）的分带特征。同时，矿区土壤地球化学测量显示，从0线开始至31线（北东→南西）具有Mo、Cu→Mo（Cu、Au）→Cu、Au（Ag、Mo、Pb）→Pb→Pb、Zn分带特征，显示物质来源和热源位于0线附近，成矿流体是以0线、7线一带向四周运移，并具有从北东向南西方向运移的特点。通过矿床地质特征、元素分带特征研究，建立了矿区地球化学勘查模型。

       

      Abstract: Abstract：After the discovery of Duobuzha and Bolong copper (gold) deposit, the exploration of the Naruo copper (gold) deposit, a large porphyry deposit, is a major breakthrough in the Dolong ore district. Based on the prospecting engineering analysis data, the authors studied the spatial distribution of metallogenic elements. The vertical zonation of metallogenic elements is not obvious, but the zoning in the plane is fairly clear: from the center of ZK0001 southwestward there exists zonation of Cu+Au→Cu(Au, Ag)→Cu(Ag, Au)→Cu(Ag). According to the soil geochemical survey, from No. 0 to No. 31 exploration line (from northeast to southwest), the zonation is Mo, Cu→Mo (Cu, Au)→Cu, Au(Ag, Mo, Pb)→Pb→Pb, Zn, suggesting that the migration direction of ore-forming fluid was from No. 0 and No. 7 line to the surrounding areas (mainly from northeast to southwest), and its materials and heat sources were near No. 0 line. Finally, through the study of geological features and element zonation, the authors established a geochemical exploration model of the Naruo ore district.

       

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