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据“世界金属导报”报道,冶金部天津地质研究院在我国冀东地区发现了新类型金矿——“长城式”金矿。矿床产于中—上元古界长城系、蓟县系灰岩破碎带中,这种金矿埋藏浅、规模大,可大规模露采;矿石结构疏松,不含泥,渗透性好,有害杂质低微,有利于工业氰化浸出。初步柱浸试验,浸出率在90％以上,属易采易选矿床。该类型金矿区域找矿潜力巨大,初步评估表明,整个矿带金的远景储量可望达数百吨。
According to the “World Metal Herald” report, the Tianjin Institute of Geology, Ministry of Metals discovered a new type of gold - “Great Wall” gold mine in Jidong, China. The ore deposit is produced in the middle-upper Proterozoic Great Wall and the Jixian limestone fracture zone. The gold deposit is shallow and large in scale and can be exposed on a large scale. The ore structure is loose and muddy with good permeability and harmful impurities Low micro, is conducive to industrial cyanide leaching. Preliminary column leaching test, the leaching rate of 90% or more, is easy to mining easy dressing. This type of gold mining area has a huge potential for prospecting. Preliminary assessment shows that the prospect gold reserves of the entire ore belt are expected to reach hundreds of tons.