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海南省的铝土矿资源居全国第二位,占全国总储量的21％。铝土矿矿床产于寒武—奥陶系不整合面之上,石炭纪本溪组地层中。它的分布常在古高地边缘、构造环境相对稳定、沉积间断时间长的湖泊泻湖相中。下伏地层为质纯的灰岩、古岩溶的凹斗对成矿有利。砂状构造的铝土矿矿石质量最好;不可忽视次生富集作用。经多年的探采,河南已从找露头矿进入找掩埋矿时期。成矿条件分析表明,河南仍有找矿前景。今后要尽量采用综合方法,大力寻找优质铝土矿。
Hainan Province bauxite resources ranks second in the country, accounting for 21% of the country’s total reserves. Bauxite deposits occur in the Cambrian - Ordovician unconformity above the Carboniferous Benxi Formation strata. Its distribution is often in the margins of ancient highlands, the tectonic environment is relatively stable, sedimentary lacustrine lag phase of a long time. Underlying strata are pure limestones, and plutons of ancient karst are favorable for metallogenesis. Sand-structured bauxite ore quality best; can not be ignored secondary enrichment. After years of exploratory mining, Henan has been looking for outcrops to find buried burial mines period. Analysis of metallogenic conditions shows that there is still prospect of prospecting in Henan Province. In the future, we should try our best to use integrated methods to vigorously search for high-quality bauxite.