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对赣南八仙脑钨矿区发现的氟磷铁锰矿进行了激光拉曼光谱、X射线粉晶衍射和电子探针成分研究,显示该种矿物为接近锰端元的氟磷锰矿。氟磷锰矿中含有丰富的气液两相包裹体,大者超过150μm,且多为气/液比小于1的富液相包裹体。拉曼光谱显示,气相组分中不仅含有H2O,还含有CH4、CO2,而液相组分则以H2O为主。氟磷锰矿在含钨石英脉中出现,且空间上与石英、萤石等脉石矿物密切共生,说明八仙脑钨矿床成矿流体具有富氟富磷的特征。此外,根据矿石中氟磷锰矿的存在,也可以初步判断相关的花岗岩体可能是富氟的花岗岩。
The results of laser Raman spectroscopy, X-ray powder diffraction and electron probe study on the fluorophlogopite found in the Baxinao tungsten ore district in southern Jiangxi show that the mineral is flumatophite close to the manganese terminal. Fluorophlogonite is rich in gas-liquid two-phase inclusions, the larger than 150μm, and mostly gas-liquid ratio less than 1 rich liquid inclusions. Raman spectroscopy showed that the vapor phase components contained not only H2O but also CH4 and CO2, while the liquid components were dominated by H2O. Fluorophlogopite occurs in tungsten-bearing quartz veins and is closely associated with gangue minerals such as quartz and fluorite, which indicates that the ore-forming fluid of the Baxianao tungsten deposit has the characteristics of fluorine-rich phosphorous. In addition, according to the existence of fusundi in ore, it can also be initially determined that the related granite body may be a fluorine-rich granite.