河南安棚碱矿成矿条件分析及找矿方向探讨

Analysis of Ore-forming Conditions and Exploration Direction of Anpeng Deposit in Henan Province

安棚碱矿赋存于中、新生代断陷盆地中,碱层与白云岩、油页岩组合成碱系地层,构成碱矿层的有用碱矿物为重碳钠盐和碳氢钠石。矿床的形成受古构造、古气候、成矿水深、湖水中有机质等条件影响。研究表明白垩纪—古近纪成盐期是全球碱成矿主时期,山前坳陷盆地是成矿有利构造类型,南阳盆地及其周围的小盆地、东濮凹陷、鲁山凹陷的核桃园组为河南省内找矿的主要层位。

The Anpeng alkali ore deposit occurs in the Mesozoic and Cenozoic fault basins.The alkaline layer is combined with dolomite and oil shale to form an alkaline formation.The useful alkali minerals that make up the alkali ore layer are sodium bicarbonate and sodium carbonate.The formation of mineral deposits is affected by conditions such as ancient geological structures,ancient climate,mineralization depth,and organic matter in lake water.It is pointed out that the Cretaceous Tertiary salt formation period is the main period for global alkaline mineralization,and the mountain front depression basin is a favorable geological structure type for mineralization.The Hetaoyuan formation in the Nanyang Basin and its surrounding small basins,Dongpu depression,and Lushan depression are the main horizons for mineral exploration in Henan province.