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评价铁帽的含金性,是迅速、准确找到具有重要经济价值之“铁帽型金矿床”的关键。作者们提出了铁帽含金性评价的矿石微量元素标志:Cu×As(重量％)>0.01时,Au往往大于1克/吨;(Mn+Pb+Zn)>0.5时,Ag大于5克/吨。土壤中微量元素的判別指标为:Cu——300ppm,Pb——40～200ppm,Zn>200ppm,Ag>500ppb。还给出了残余原生硫化物(黄铁矿、磁黄铁矿、黄铜矿、闪锌矿、方铅矿等)和表生矿物(针铁矿、赤铁矿、锰矿物、铜蓝、自然金、粘土矿物、石英等)的微量元素评价标志。最后列出了7个铁帽的评价应用实例。
Evaluating the gold content of the iron hat is the key to quickly and accurately finding a “iron hat-type gold deposit” with important economic value. The authors proposed the iron ore microelements that were evaluated for the gold content of the iron cap: Cu> As (wt%)> 0.01, Au tends to be more than 1 g / t; when (Mn + Pb + Zn)> 0.5, /Ton. The discriminant indexes of trace elements in soil are: Cu - 300ppm, Pb - 40 ~ 200ppm, Zn> 200ppm, Ag> 500ppb. Remaining primary sulphides (pyrite, pyrrhotite, chalcopyrite, sphalerite, galena, etc.) and epigenetic minerals (goethite, hematite, manganese minerals, copper blue, Natural gold, clay minerals, quartz, etc.) trace elements evaluation mark. Finally, a list of seven iron cap evaluation application examples.