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对矿物流体包裹体进行分析的结果表明 ,牦牛坪稀土矿床的矿物中存在 4种类型包裹体 :(1)液 -气相 ;(2 )液 -气 -固相 ;(3)纯气相 ;(4 )固相。矿物包裹体显微测温结果显示牦牛坪矿床成矿温度从 42 3℃至 12 2℃ ;成矿流体的盐度 w(Na Cl)为 11.46 %～14.36 %质量分数。包裹体的成分分析结果显示流体中富含 CO2 和其他挥发性组分 ,并富含大量的不同成分的矿物雏晶。根据矿床地质特征和矿物包裹体的研究结果 ,作者认为本矿床的成矿作用是由碳酸岩岩浆气液流体的沸腾、充填和交代过程而实现的。
Analysis of mineral fluid inclusions shows that there are four types of inclusions in the minerals of the Maoniuping REE deposit: (1) liquid-gas phase; (2) liquid-gas-solid phase; (3) pure gas phase; )Solid Phase. The results of microscopic temperature measurement of mineral inclusions show that the mineralization temperature of the Maoniuping deposit ranges from 42 3 ℃ to 122 ℃. The salinity w (Na Cl) of ore-forming fluid is 11.46% -14.36% by mass. The composition analysis of the inclusions shows that the fluid is rich in CO2 and other volatile components and is rich in a large number of mineral crystallites with different compositions. According to the geological characteristics of the deposit and the results of mineral inclusions, the author thinks that the mineralization of this deposit is realized by the process of boiling, filling and replacement of gas-liquid fluid in carbonate magma.