福建沙县琅口巨斑状花岗岩风化型钾长石矿床地质特征及成因

Geologic Characteristics and Genesis of the Langkou Potash Feldspar Deposit of the Megaporphyritic Granite-weathering Type in Sanxian County, Fujian Province

沙县琅口钾长石矿是近年来福建省发现的巨斑状中粗粒角闪黑云二长花岗岩风化型钾长石矿床。矿体赋存于巨斑状中粗粒角闪黑云二长花岗岩弱风化带中。通过野外工作,总结钾长石矿床的赋存规律和空间分布,并对矿区地质特征、成矿作用及成因等进行了探讨。

The Langkou potash feldspar deposit is one of potash feldspar deposits of weathering type of megaporphyritic medium-coarse grain hornblende biotite adamellite found within Fujian Province in recent years. The potash feldspar orebodies are discovered in a slightly-weathered zone of megaporphyritic medium-coarse-grain hornblende biotite adamellite. The regular occurrence pattern and spatial distribution of the potash feldspar deposit are present in the paper and the geologic characteristics, ore-forming process and genesis of the deposit are also under discussion herein.