黑钨矿中锰铁比值的成因意义研究

在地质找矿勘探工作中,研究黑钨矿的锰铁比值可以帮助确定矿床的成因类型,并且,在某种程度上还可以当作相对的“地质矿物温度计”来应用。在自然界,影响黑钨矿中锰铁比值的因素甚多,诸如,成矿介质的pH值和Eh值、化学反应动力状况、区域地球化学特点、压力以及形成温度等。关于成矿温度,在许多情况下虽然不是影响黑钨矿中锰铁比值的决定性因素,但仍不失为一重要因素,故其与黑钨矿中锰、铁成分变化的关系引起了国内外许多研究者的重视。

ON THE STUDY OF GENETIC SIGNIFICANCE OF MANGANESE-IRON RATIOS IN WOLFRAMITE

In this paper,the problems in the theoretical study of genetic significance of maganese-iron ratios in wolframite are discussed.The paper puts forward a new idea of that the manganese-iron ratios in wolframite can be considered to be a new geothermometer in case the other factors are the same.The higher the minerogenetic temperature,the closer the number of the molecules of MnWO₄ to the number of the molecules of FeWO4 in wolframite is.Also outlined in the paper are the experimental results of minerogenetic temperature of various wolframites from the XS tungsten mine in Jiangxi Province,China.