四川盆地米仓山南缘新立萤石矿床成矿流体研究
发布时间:2018-01-12 17:01
本文关键词:四川盆地米仓山南缘新立萤石矿床成矿流体研究 出处:《矿物岩石地球化学通报》2016年03期 论文类型:期刊论文
【摘要】:为研究新立萤石矿床成矿液体特征,对矿床中的萤石包裹体进行了研究。结果表明,萤石中主要发育液相CH_4包裹体、气液两相H_2O-NaCl-CH_4体系包裹体和气液固三相包裹体。包裹体均一温度峰值为240~300℃,盐度为14%~22%NaCleqv,捕获压力为135~222MPa,具有超压特征。包裹体成分以CH_4为主,其次为H_2O,含有少量CO_2、C_2H_4和H_2S等组分。显微测温和激光拉曼分析结果表明,萤石成矿流体与MVT铅锌矿成矿流体类似,且具有油田卤水的特征。萤石矿的形成与古气藏的破坏密切相关,其成矿时间明显晚于MVT铅锌矿。
[Abstract]:In order to study the ore-forming liquid characteristics of the Xinli fluorite deposit, the fluorite inclusions in the deposit are studied. The results show that the liquid phase CH_4 inclusions are mainly developed in the fluorite deposits. The inclusions in gas-liquid two-phase H2O-NaCl-CH4 system and gas-liquid-solid three-phase inclusions have a peak homogenization temperature of 240 鈩,
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