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磁铁石英岩矿体是个层状盲矿体,长670m,厚为110～270m。矿体埋藏深度:南段为220～230m,北段为320～340m。走向为北东,倾角为45°～75°。磁铁石英岩矿体由以下类型的矿石组成:硅酸盐-赤铁矿-磁铁矿和碳酸盐-硅酸盐-磁铁矿。这两种矿石的结构呈层状,层厚由薄至中等。矿体与围岩的接触具有逐渐过渡的特点,要用化学分析法确定。磁铁石英岩的坚固性系数 f 等于15～18(40%)至19～20(60%)。覆盖岩石为半氧化和氧化的含铁石英岩,f 等于10～14(20%)至15～18(80%);下盘岩石为碧玉铁质岩及含
Magnetite rock ore body is a layered blind ore body, length 670m, thickness of 110 ~ 270m. Depth of burial ore body: the southern section of 220 ~ 230m, the northern section of 320 ~ 340m. Toward the North East, dip 45 ° ~ 75 °. Magnet Quartzite ore bodies are composed of the following types of minerals: silicate-hematite-magnetite and carbonate-silicate-magnetite. The two ores have a layered structure with thin to medium layer thicknesses. The contact between ore body and surrounding rock has the characteristics of gradual transition, which should be confirmed by chemical analysis. The magnetite quartz rock has a firmness factor f equal to 15-18 (40%) to 19-20 (60%). The rock covers the semi-oxidized and oxidized iron-bearing quartzite with f equal to 10-14 (20%) to 15-18 (80%); the lower rock is jasperite and