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雪宝顶钨-锡-铍矿床以盛产晶形完整、色彩瑰丽的白钨矿及罕见的板状绿柱石而著名。矿脉产于印支晚期花岗岩体内及其围岩中,从岩体向围岩,矿脉具有明显的分带性:矿物成分由钠长石、石英、锡石、绿柱石、白钨矿、萤石、水晶;流体包裹体的均一温度从284℃(石英)-275℃(绿柱石)-234℃(方解石)-232℃(白钨矿);盐度w(NaCleq)从5.9%(石英)-5.0%(绿柱石)-4.5%(方解石)-3.5%(白钨矿),显示出逐渐降低的变化趋势,表明钨、锡、铍矿化与岩浆活动具有密切的成因联系。矿物中气液H2O包裹体与含液相CO2的三相包裹体密切共生,成矿流体属NaCl-CO2-H2O体系,并具深源特点。流体中CO2的大量存在对钨等金属元素的迁移、沉淀起着至关重要的作用。
The Seabed tungsten-tin-beryllium deposit is famous for its rich, colorful scheelite and rare plate-beryl. The veins were produced in late Indosinian granites and their surrounding rocks. From the rock masses to the surrounding rocks and veins, the veins have obvious zonation: the mineral components are composed of albite, quartz, cassiterite, beryl, scheelite, fluorite (Quartz) -275 ℃ (beryl) -234 ℃ (calcite) -232 ℃ (scheelite); salinity w (NaCleq) from 5.9% (quartz) - 5.0% (beryl) -4.5% (calcite) -3.5% (scheelite), shows a gradually decreasing trend, indicating that tungsten, tin and beryllium mineralization has a close genetic relationship with magmatic activity. The gas-liquid H2O inclusions in minerals are closely intergrowth with the three-phase inclusions containing liquid-phase CO2. The ore-forming fluid belongs to NaCl-CO2-H2O system and has deep-source characteristics. The presence of large amounts of CO2 in the fluid plays a crucial role in the migration and precipitation of metal elements such as tungsten.