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一桐柏山金银矿床分布于秦岭东西复杂构造带的东段南支,河前庄背斜西北段下古生界歪头山组变质岩系中。赋矿岩石为碳质绢云石英片岩。金银矿床赋存于一定的层位中,受地层的严格控制。上含矿带为破山银矿。矿体一般呈层状、似层状和透镜状。矿体沿走向、倾向变化稳定。全矿区银的平均品位为200克/吨,根据储量计算,为一特大型银矿床。破山银矿的氧化带,有七十～八十米深,其中大破山矿体出露较好,具有露采价值。根据物质组成研究和选矿试验,认为破山银矿的地表氧化矿可以单独处理,这样做在技术上是可行的,经济上也是合理的。破山银矿的氧化带,铅锌含量很低:PbO0.3％,ZnO0.12％,而银的品位平均达200克/吨,可以作为单一银矿处理。这在国内外是比较少见的。由于大多数银的来源出
A Tongbai Mountain gold-silver deposit is located in the south branch of the eastern segment of the Qinling-West complex belt and is in the Lower Paleozoic Yuntoushan Formation metamorphic rocks in the northwestern segment of the Hezianzhuang anticline. The ore-hosting rocks are carbonaceous silicalite schist. Gold and silver deposits occur in a certain horizon, by the strata of strict control. On the ore-bearing belt for breaking silver hill. Ore body is generally layered, layered and lenticular. Ore body along the trend, the tendency of change is stable. The average grade of silver in the entire mining area is 200 g / t, which is a very large silver deposit calculated on the basis of reserves. Broken Hill silver oxide zone, there are seventy to eighty meters deep, in which the large broken mountain ore body exposed, with the value of open-cut mining. According to the study of material composition and dressing test, it is considered that the surface oxide ore of the Po-shan silver mine can be treated separately, which is technically feasible and economically reasonable. The oxidation zone of the Po Shan silver mine has very low levels of lead and zinc: PbO 0.3% and ZnO 0.12%, while the average silver grade reaches 200 g / t and can be treated as a single silver mine. This is rare at home and abroad. Due to the source of most silver out