沂水崔家峪玻璃用石英砂岩矿地质特征

Geological Characteristics of Glass-using Quartz Sandstone Deposit in Cuijiayu of Yishui County

摘要:

沂水崔家峪玻璃用石英砂岩矿床赋存于早寒武世李官组砂岩段中,呈近水平的层状产出。因其岩石坚硬,矿体呈环山的平台状分布。矿体厚度大,矿石品级高,特级品矿石二氧化硅平均含量98.47%,铁杂质平均含量0.043%(选矿后,铁杂质含量可降至0.02%以下),为一优质玻璃硅质原料矿床。矿石为细—中粒石英砂岩,粒度以中粒为主,矿石由碎屑颗粒和胶结物组成,碎屑成分含量为97%～98%,其中绝大部分是石英颗粒,具典型的砂屑结构。该矿床属滨海陆源沉积矿床。

Abstract:

Due to its hard rock, orebodies distribute in platfo rm type around mountains with large thickness and high quality. Average content of SiO 2 in super quality orebodies is 98.47%, and average content of Fe admixtur e is 0.043% (after selecting, content of Fe admixture can be reduced to under 0. 02%) which is good glass-using silicate materials. Orebodies are fine-medium siz e quartz sandstone, and size are majorly in medium type. They are composed of fr agemental grains and cement, fragemental contnets are 97%～98%, and most are qua rtz grains, which have typical fragemental structure. This deposit belongs to li ttoral epicontinental sedimentary deposit.