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湖北省石油化学工业局刘乃富同志报道黄石煤炭矿务局袁仓煤矿,在下二迭统茅口组揭露到含磷泥质、硅质岩层。袁仓矿区茅口组厚162米,含磷层产于茅口组中部,厚2—3.5米。含磷层由硅质泥质物胶结磷结核构成。磷结核黑色、灰黑色,少数为棕色;直径1—5厘米,3—5厘米者居多。以硅质胶结物为主的硅质岩中含磷结核率12.7—25％,厚0.8—1.2米;以泥质胶结物为主的泥质岩中含磷结核率29.5—41.7％,厚1.3—2.3米。磷结核P_2O_5含量22.18—32.7％,含磷泥质硅质岩P_2O_5含量0.88—1.88％。
Comrade Liu Nai-fu from Hubei Petrochemical Industry Bureau reported that Yuancang Coal Mine of Huangshi Coal Mining Administration exposed phosphorus-bearing argillaceous and siliceous rock formations in the Maokou Formation of the Lower Second Permian. Yuancang Maokou mine area 162 meters thick, phosphorus layer produced in the middle of Maokou group, 2-3.5 meters thick. The phosphorus-containing layer is made of siliceous mudstone cementing phosphorus-containing tuberculosis. Phosphorus nodules black, gray-black, a few brown; diameter of 1-5 cm, 3-5 cm majority. The siliceous rocks mainly composed of siliceous cements have a rate of 12.7-25% of phosphorus-containing nodules and a thickness of 0.8-1.2 meters. Phosphorus-bearing nodules (29.5-41.7%) and peat -2.3 meters. Phosphorus tuberculosis P_2O_5 content of 22.18-32.7%, phosphorus-bearing silicalite P_2O_5 content of 0.88-1.88%.