大贫矿中圈出富矿的作法

Method of Delineation of Rich Ores in Large Poor Ores

哇了格矿区矿体赋存于甲丕拉组灰岩层间滑脱破碎带内,呈似层状或透镜状产出。矿体有用组分为铅、银,以铅矿为主,品位较低;银矿主要为伴生有益组分,部分块段银矿品位较高,达到共生矿床要求。矿区主要矿体的厚度、品位变化较大,按常规的矿体圈定原则,圈定的矿体存在平均品位较低、贫矿富矿不明显、主体不突出等问题。为了解决这些问题,不仅要重新厘定工业指标,同时在矿体的圈定上,要灵活运用这些指标,采用多种方法试圈,达到既能充分体现矿体的连续性,又能最终确保矿床的平均品位;既能体现矿体的层控特征,又能圈出富矿勘探地段。

Orebody in Waliaoge mining area hosting in Jiapela Formation of fracture zone of interlayer gliding appears to be stratiform-like , lenticular. The useful components of orebody as lead, silver, predominate in lead. Silver is mainly as- sociated useful components, partial block silver has high grade. According to the principle of conventional ore delinea- tion, delineated orebody exists many problems inchding low average gradeand not remarkable subject. In order to solve these problems, the author not only defines the industrial index, but also flexibly uses these indicators. Using a variety of methods to test cycle, not only achieves continuity of orebody, but also reflects stratabound characteristics of orebody.