Molybdenite mineralization is located at the northern periphery of Gabal Gattar granite. Molybdenite-bearing quartz veins are well developed within the granitic rocks in the northern part of the pluton. These veins are striking mainly NNE. Wall rock alteration represented by silicification, kaolinitization and serecitization. The study of ore mineral assemblage revealed the relative predominance of molybdenite, beside gold, silver and bismuth, whereas wulfenite, hubnerite, columbite, tantalite, goethite and jarosite are rare minerals. Ore bodies of sulphide phase are quite poor and represented by minor quantities of pyrite, chalcopyrite, galena and sphalerite. Fluid inclusion microthermometry confirmed the presence of two types of fluid inclusions. Primary two-phase aqueous inclusions (L + V) as type 1 and secondary two-phase aqueous inclusions (L + V) as type 2. The secondary inclusions are the most abundant type in quartz vein bearing molybdenite. They are arranged along healed fractures displaying oval, sphere or elongated shapes and up to 24 μm in size. Fluid inclusion study indicates that fluids infiltrated in Gattar granite were generally low salinity from 1 to 6 wt.% NaCl eq. with a maximum peak at 1 wt.% NaCl eq. with temperatures from 149.7 to 272.3 °C with majorities at 220 °C and pressures between 35 and 100 bars. The decreasing of homogenization temperatures (Th) with salinity may indicate protracted mixing of two fluids that facilitated the attainment of thermal equilibrium as well as chemical homogeneity.

中文翻译：

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矿物学和流体包裹体证据，埃及东北沙漠加巴尔加塔尔的辉钼矿成矿成因

辉钼矿成矿位于加巴尔加塔尔花岗岩的北部边缘。含钼辉石的石英脉在岩体北部的花岗岩中发育良好。这些脉络主要是NNE。围岩蚀变以硅化，高岭土化和硒化为代表。矿石矿物组合的研究表明，除了金，银和铋之外，辉钼矿的相对优势很大，而辉石，锰铁矿、,钴矿，钽铁矿，针铁矿和黄钾铁矾是稀有矿物。硫化物相的矿体非常贫瘠，以少量的黄铁矿，黄铜矿，方铅矿和闪锌矿为代表。流体夹杂物温度计证实了两种类型的流体夹杂物的存在。初级两相含水夹杂物（L + V）为1型，次级两相含水夹杂物（L + V）为2型。次级夹杂物是含石英脉辉钼矿中含量最高的类型。它们沿着愈合的骨折排列，呈椭圆形，球形或细长形，尺寸最大为24μm。流体包裹体研究表明，渗入Gattar花岗岩的流体通常盐度为1至6 wt。％NaCl当量。在1 wt。％NaCl当量时有最大峰 温度范围为149.7至272.3°C，多数温度为220°C，压力为35至100 bar。均质温度（Th）随盐度的降低可能表明两种流体的长时间混合，这有助于实现热平衡以及化学均一性。次生夹杂物是石英脉状辉钼矿中含量最高的类型。它们沿着愈合的骨折排列，呈椭圆形，球形或细长形状，尺寸最大为24μm。流体包裹体研究表明，渗入Gattar花岗岩的流体通常盐度为1至6 wt。％NaCl当量。在1 wt。％NaCl当量时有最大峰 温度范围为149.7至272.3°C，多数温度为220°C，压力为35至100 bar。均质温度（Th）随盐度的降低可能表明两种流体的长时间混合，这有助于实现热平衡以及化学均一性。次生夹杂物是石英脉状辉钼矿中含量最高的类型。它们沿着愈合的骨折排列，呈椭圆形，球形或细长形状，尺寸最大为24μm。流体包裹体研究表明，渗入Gattar花岗岩的流体的盐度通常为1至6 wt。％NaCl当量。在1 wt。％NaCl当量时有最大峰 温度范围为149.7至272.3°C，多数温度为220°C，压力为35至100 bar。均质温度（Th）随盐度的降低可能表明两种流体的长时间混合，这有助于实现热平衡以及化学均一性。流体包裹体研究表明，从Gattar花岗岩中渗入的流体通常盐度为1至6 wt。％NaCl当量。在1 wt。％NaCl当量时有最大峰 温度范围为149.7至272.3°C，多数温度为220°C，压力为35至100 bar。均质温度（Th）随盐度的降低可能表明两种流体的长时间混合，这有助于实现热平衡以及化学均一性。流体包裹体研究表明，从Gattar花岗岩中渗入的流体通常盐度为1至6 wt。％NaCl当量。在1 wt。％NaCl当量时有最大峰 温度范围为149.7至272.3°C，多数温度为220°C，压力为35至100 bar。均质温度（Th）随盐度的降低可能表明两种流体的长时间混合，这有助于实现热平衡以及化学均一性。