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一、前言一九八五年初,我们队在泌阳凹陷的安棚安_3井2333.9-2337.6米间的固体碱矿层中,发现了此地从未见到的矿物——碳氢钠石。这在我国尚属首次:在国外,也只是在美国怀俄明州绿河盆地天然碱矿中见到。因此,碳氢钠石的发现,对于总结我国古代天然碱矿的成矿地质条件,研究形成机理和碱矿的开发利用等,将有着重要的作用和意义。二、矿层特征碱矿赋存于晚始新世早期核桃园组核一段顶部与核二段下部之间,局部出现于核三段底部;呈固相及液相产出,固相碱矿主要呈层状,辅以似层状、透镜状或团块状。其顶底板大
I. INTRODUCTION In early 1985, our team found a mineral that has never been seen here, such as sodium bicarbonate, in the solid basement ore layer between 2333.9 and 2333.6 meters in the Anpeng’an-3 well in the Biyang Depression. This is the first time in our country that, outside China, it is only seen in the Trona Mine of the Green River Basin in Wyoming, the United States. Therefore, the discovery of sodium bicarbonate stone will have an important role and significance for summarizing the geological conditions for the formation of the ancient trona ore in our country, studying the formation mechanism and exploitation and utilization of the alkali mine. Second, the characteristics of ore deposits Occurred in the Early Eocene Hetaoyuan Formation nuclear first and second nuclear section between the lower part of the local appeared in the bottom of the third nuclear section; was solid and liquid phase output, the main solid-phase alkali mine Stratified, supplemented by similar layered, lenticular or lumpy. Its top floor big