Rock-Forming and Ore-Forming Temperatures of Lianhuashan Tungsten Deposit,Guangdong Province

作     者：李兆麟 杨忠芳 

作者机构：DepartmentofGeologyZhongshanUniversityGuangzhou510275 ChinaUniversityofGeosciencesBeijing100083 

出 版 物：《Chinese Journal Of Geochemistry》 (中国地球化学学报)

年 卷 期：1996年第15卷第3期

页      面：239-248页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

主　　题：包裹体 成岩温度 成矿温度 钨矿床 广东 成矿作用 

摘      要：The Lianhuashan tungsten deposit occurs in the volcanic terrain in the coastal area of Southeast China, where rhyolite, quartz porphyry and granite constitute a complete magmatic series. The orebodies are located in the endo- and exo-contacts between the quartz porphyry and the metasandstone of the Xiaoping ccal measures. Homogenizalion temperatures of melt inclusions in zircon and quartz are 1100℃ and 1050℃ for rhyolite, 1000℃ and 860℃ for quartz porphyry, and 950 - 1000℃ and 820℃ for granile, respectively, demonstrating that the rockforming temperatures dropped successively from the eruptive to the intrusive rocks and that the homogenization temperatures of melt inclusions in zircon are 50 - 180℃ higher than those in quartz. Homogenization temperatures of gas-liquid inclusions in quartz are 230 - 520℃ (mostly 230 - 270℃) for quartz porphyry, 200 - 450℃ (mostly 200 - 360℃ ) for ore-bearing quartz veins, 150 - 210℃ for granite and 170 - 200℃ for the vein quartz in it. Quartz from the quartz porphyry and from the ore-bearing quartz veins show similar characteristics in inclusion type and homogenization temperature, indicating that intergranular solutions must have been formed upon cooling of magma and that ore-forming solutions for the tungsten mineralization were evoved mainly from ore-bearing intergranular soutions in the quartz porphyry.