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首页> 外文会议>Biennial SGA meeting;Quadrennial IAGOD symposium >The Au-Cu epithermal deposit at palai-islica, almeria, SE of spain: preliminary data
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The Au-Cu epithermal deposit at palai-islica, almeria, SE of spain: preliminary data

机译：西班牙东南部阿尔梅里亚帕莱伊西利卡的金铜超热矿床：初步数据

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The following sequence of hydrothermal alterations has been identified within the epithermal gold-copper-bearing deposit at Palai-Islica: propylitic, sericitic, argillitic (extending over a surface area of some 2.5 x 1.7 km~2), and silicic (+- carbonatation). Mineralization appears in association with quartz veins, stockworks and layers of silica with sulphides (pyrite +- chalcopyrite +- other minor sulphides and native gold). Three fluids have been identified related to the mineralization: (A) a high-temperature, high-salinity fluid (magmatic?); (B) a fluid of relatively constant temperature and very variable salinity, and (C) a lower temperature and relatively low, constant salinity fluid (ground waters?). The considerable difference in the nature of these fluids (due mainly to the isothermal mixing of A and B fluids and a heterogeneous entrapment of the solutions - due possibly to boiling-) seems to have been responsible for the precipitation of gold.
机译：在Palais-Islica的超热含金铜矿床中发现了以下热液蚀变序列：丙炔，绢云母，泥质（覆盖约2.5 x 1.7 km〜2的表面积）和硅质（+-碳酸化作用） ）。矿化作用与石英脉，储层和带有硫化物（黄铁矿+-黄铜矿+-其他次要硫化物和天然金）的二氧化硅层有关。已经确定了与矿化有关的三种流体：（A）高温，高盐度流体（岩浆？）; （B）温度相对恒定且盐度变化很大的流体，（C）温度较低且恒定盐度较低的流体（地下水？）。这些流体性质的显着差异（主要是由于A和B流体的等温混合以及溶液的异质夹带（可能是由于沸腾的缘故））似乎是造成金沉淀的原因。

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