六盘山盆地硝口地区岩盐矿物学特征及地质成因分析  

Mineralogical characteristics and geological origin of halite in Xiaokou Liupanshan basin

作　　者：郑毅 何伟 柳强 褚小东 强泰 谢变宁 

机构地区：[1]宁夏矿产地质调查院,宁夏银川750021

出　　处：《洁净煤技术》2012年第5期119-123,共5页Clean Coal Technology

基　　金：国土资源部公益性行业科研专项经费项目(201111006)

摘　　要：六盘山盆地硝口地区岩盐赋存于下白垩统六盘山群乃家河组上岩段,含矿层数多,厚度变化大,容矿岩石主要为含白云质泥岩、白云质泥岩,以粗晶结构、块状构造为主。矿物成分主要为岩盐及芒硝、钙芒硝、石膏、硬石膏等其他盐类矿物,含有少量金属矿物。岩盐形成于气候干燥、封闭条件良好的咸湖相沉积环境,沉积物特征整体上具有一个完整的碳酸盐-氧化物旋回。新生代构造活动对本区岩盐赋存特征的改造、破坏作用明显。The halite of Xiaokou region occurs in Naijiahe Formation of Liupanshan group, Lower Cretaceous. The mineral deposit is characterized by large number of layers and great thickness variations. The host rocks are mainly mudstone with dolomite and dolomite mudstone, coarse grain and blocky structure. The major components are salt and other saline minerals including sodium sulfate, glauberite, gypsum and anhydrite. Halite is formed in dry climate, closed condition salty lacustrine depositional environment. The sediment characteristics indicate a complete carbonate-oxide cycle. Cenozoic tectonic activities strongly affects the halite occurrence characteristics.

关 键 词：六盘山 硝口 岩盐 矿物 地质成因 

分 类 号：TD849[矿业工程—煤矿开采] P578.32[矿业工程—矿山开采]