山东省诸城市石门顶矿区长石矿矿床地质特征及利用前景

摘要

Shimending feldspar deposit locates in Linjiacun tow n of Zhucheng city .Gneissic biotite granite deposit in Baoshan unit of Neoproterozoic Rongcheng super unit occurred in this area .Deposit occurred in granitic pegmatite veins and are composed of 10 feldspar veins with different sizes .Natural type of feldspar deposit is granitic pegmatite and is mainly composed of potassium feldspar ,albite ,quartz and minor biotite and other minerals .County rocks of ore bodies are gneissic biotite in Baoshan unit .The deposit is formed by magma and experienced four mineralization stages .Origin type of this deposit is weak differentiation type .The ores are mainly used in glass ,ceramics ,chemicals ,abrasives ,glass fiber ,welding and other in‐dustries .It has a good development prospect .%石门顶长石矿区位于诸城市林家村镇，矿区内主要发育有新元古代荣成超单元宝山单元片麻状黑云二长花岗岩，矿床赋存于花岗伟晶岩脉中，由大小不等的10条长石矿脉组成，矿石自然类型为长石花岗伟晶岩，主要由钾长石、钠长石、石英及少量黑云母等矿物组成，矿体围岩为宝山单元片麻状黑云二长花岗岩。该矿是由岩浆作用形成的，其形成经过4个成矿阶段，属弱分异型矿床，其矿石主要用于玻璃、陶瓷、化工、磨料磨具、玻璃纤维、电焊条等行业，开发前景较好。