安徽池州三峰尖水泥配料用砂页岩矿地质特征及成因探讨

Geological Characteristics and Genesis of Sanfengjian Sand Shale Deposit for Cement in Chizhou,Anhui Province

三峰尖水泥配料用砂页岩矿区位于安徽省池州市贵池区,矿体总体呈南西—北东向,赋存于下志留统坟头组(S1f)、中志留统茅山组(S2m)及上泥盆—下石炭统五通组(D3C1w),构造形态简单,总体呈单斜层状产出,矿体连续一般,厚度变化小。矿床由硅质原料矿体及粘土质原料矿体组成,粘土质及硅质原料各个矿体呈互层状或呈透镜状分布于另一矿体中,相互穿插。硅质原料矿体矿石类型为石英砂岩、细砂岩,粘土质原料矿体矿石类型为粉砂岩、泥质粉砂岩和粉砂质页岩。通过分析该矿床的地质特征,认为该矿床为陆源碎屑建造相沉积成因类型。

Sanfengjian sand shale deposit for cement is located in Guichi district,Chizhou city,Anhui province.The ore bodies are generally south-west-north-east,occurring in the lower Silurian Fantou formation(S1f),the Middle Silurian Maoshan formation(S2m)and the upper Devonian-lower Carboniferous Wutong formation(D3C1w),the structure is simple,the whole is monoclinic,the ore body is continuous and general,the thickness change is small.The deposit is composed of siliceous ore body and clay ore body,each ore body of clay and siliceous ore body is interbedded or lenticular in another ore body,interpenetrating with each other.The ore types of siliceous raw materials are quartz sandstone and fine sandstone,and the ore types of clay raw materials are siltstone,argillaceous siltstone and silty shale.Based on the analysis of the geological characteristics of the deposit,it is considered that the deposit belongs to continental clastic tectonic facies sedimentary genetic type.