摘要
辽西六家子膨润土矿床赋存于中生界下白垩统义县组酸性火山碎屑岩系中,共划分为3个矿层,矿体呈层状、似层状产出,延长510~1140m,延伸240~700m,平均厚度2.34~3.18m。矿石呈泥质结构,块状构造,主要矿物成分蒙脱石含量76.9%~77.5%,化学成分总体特征为Al_(2)O_(3)偏高,K_(2)O、Na_(2)O偏低,属钙基膨润土。通过对矿床地质特征、矿床蚀变分带元素迁移规律等分析,初步认为该矿床成因类型属酸性火山碎屑岩水解蚀变型膨润土矿床。
The Liujiazi betonies deposit in western Liaoning occurs in the acidic volcanic classic rock series of the Yixian formation of the lower Mesozoic Cretaceous.It is divided into 3 ore layers,510~1140m,extension 240~700m,average thickness 2.34~3.18m.The ore has a muddy structure and a massive structure.The main mineral component,montmorillonite,contains 76.9%~77.5%.The overall characteristics of the chemical composition of the ore are that Al_(2)O_(3) is relatively high,while K_(2)O and Na_(2)O are relatively low.It belongs to calcium bentonite.Through research on the geological characteristics of the deposit and the migration law of elements in the alteration zone of the deposit,it is preliminarily believed that the genetic type of the deposit belongs to the acidic pyroclastic sedimentary hydrolysis alteration type bentonite deposit.
作者
刘立柱
LIU Li-zhu(Liaoning Branch of China National Geological Exploration Center of Building Materials Industry,Shenyang 110004,China)
出处
《中国非金属矿工业导刊》
2021年第6期30-33,共4页
China Non-Metallic Minerals industry
关键词
膨润土矿床
地质特征
矿床成因
bentonite deposit
geological characteristics
genesis of the deposit
