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洞穴矿物是在洞穴环境下由冷的地下水活动所产生的表生化学沉积作用产物。桂林地区(包括兴安—桂林—阳朔一带)岩溶洞穴中的次生矿物已发现有方解石、文石、石膏、氢氧磷灰石、磷铝石、磷铝钾石、磷钙铝石和半蛋白石等。文章中列举了这些矿物的偏光显微镜、化学分析、x光粉晶衍射、差热分析和扫描电镜等鉴定结果,并概要地探讨了其成因。
Cavern minerals are the product of surface chemical and chemical deposition resulting from cold groundwater activity in a cave environment. Secondary minerals such as calcite, aragonite, gypsum, hydroxyapatite, apalite, apalite, pyrophyllite and hemi-opal have been found in karst caves in the Guilin area (including Xing’an-Guilin-Yangshuo area) . In the article, the identification results of polarized light microscopy, chemical analysis, X-ray powder diffraction, differential thermal analysis and scanning electron microscopy of these minerals are listed and their causes are summarized.