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板其磷矿为近年地质找矿工作中新发现的次生磷矿床,矿体产于二叠纪台地边缘吴家坪组礁灰岩分布区的古溶洞和第四系残坡积物中,可再分为溶洞堆积型和风化—淋滤残积型2个矿床成因亚类。本文根据普查地质报告第一手资料,在阐述地质背景和矿床地质特征的基础上,分析了矿床形成条件,并与美国田纳西州中部的风化淋积磷矿床进行对比,建立了该矿床的描述性成矿模式。通过本次研究,增加了贵州磷矿的新类型,指出了我国南方溶洞堆积型磷矿床分布的新区域,为深入研究我国次生风化型磷矿床的形成条件和形成机制提供了新资料。
Its phosphate rock is a newly discovered secondary phosphate deposit discovered in geological prospecting work in recent years. The ore body is produced in paleokarst caves and Quaternary residual sediments in the reef limestone distribution area of the Wujiaping Formation on the margin of Permian. Then it is divided into cavern accumulation type and aeolian-leaching residual type two genesis subclasses. Based on the first-hand data of the census geological report, based on the geological background and geological characteristics of the deposits, the formation conditions of the deposits are analyzed and compared with the weathering lacustrine deposits in central Tennessee of the United States. A description of the deposit is established Sexual metallogenic model. Through this research, the new type of phosphate rock in Guizhou is increased, and a new region of the distribution of cave-type phosphate deposits in southern China is pointed out, which provides new information for further study on the forming conditions and formation mechanism of the secondary weathered phosphate rock deposits .