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前人总结的地球化学找矿参数,大多数是作者个人对该矿种地球化学特征的经验性总结,局限性较大。为了探索更有助于找矿的地球化学参数,我们以钾镁煌斑岩型金刚石矿床为例,用计算机对国内外已知含金刚石程度的17个岩体的30件样品中SiO_2、Al_2O_3、Fe_2O_3、FeO、MgO、CaO、NaO、K_2O、CO_2、MnO、P_2O_5、TiO_2共12个分析项目进行了任一组合方式的计算,然后对每一组合参数进行错判率检验,最终选出错判率小于6—10％的钾镁煌斑岩型金刚石矿床地球化学找矿参数为:MgO/MnO、CaO/TiO_2、SiO_2/(Na_2O+K_2O+CO_2)、K_2O/(CO_2+MnO),MgO/(MgO+CaO+K_2O+NO_2O)等22个
Most of the previous summary of geochemical prospecting parameters, the author’s personal experience of the geochemical characteristics of the mine empirical summary, larger limitations. In order to explore geochemical parameters that are more conducive to ore prospecting, taking the magnesia lamprophyre type diamond deposit as an example, we use computer to analyze the distribution of SiO_2, Al_2O_3, 12 combinations of Fe 2 O 3, FeO, MgO, CaO, NaO, K 2 O, CO 2, MnO, P 2 O 5 and TiO 2 were calculated and then the misjudgment rate was tested for each combination of parameters, The geochemical prospecting parameters for the porphyry-type porphyry diamond deposits of less than 6-10% are MgO / MnO, CaO / TiO_2, SiO_2 / (Na_2O + K_2O + CO_2), K_2O / (CO_2 + MnO) MgO + CaO + K_2O + NO_2O) and other 22