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沙麦钨矿床位于内蒙古东乌旗沙麦苏木,大地构造位置属于兴蒙造山带中段。矿区已探明350条含钨矿脉,其中76条已达到了工业开采价值(胡朋,2005)。矿区地层主要出露泥盆统安格尔音乌拉组浅变质岩和中下侏罗统马尼特庙群火山沉积岩。矿区大面积出露黑云母二长花岗岩,还可见伟晶岩、细粒花岗岩、石英正长斑岩等呈岩墙或岩脉侵位其中。矿区矿化类型主要为伟晶岩型和云英岩型两种,伟晶岩型矿石品位较高于云英岩型矿石。伟晶岩型矿石成分主要有黑钨矿、石英和白云母,伴生有萤
Shamai tungsten deposit is located in Chamuhe, Dongwu County, Inner Mongolia. The tectonic location belongs to the middle of the Xingmeng orogenic belt. The mine has proven 350 tungsten ore veins, of which 76 have reached the value of industrial exploitation (Hu Peng, 2005). The strata of the mining area mainly reveal the shallow metamorphic rocks in the Devonian-Ula Formation and the volcanic sedimentary rocks in the Middle-Lower Jurassic Manitian Miao Group. A large area exposed biotite monzogranite, also shows pegmatite, fine-grained granite, quartz is long porphyry were dikes or dikes invaded them. The mineralization types in the mining area are mainly two types of pegmatite and dolomite, the pegmatite ore grade is higher than that of Yunying rock type ore. Pegmatite-type ore composition mainly wolframite, quartz and muscovite, accompanied by firefly