【摘要】 华北地区磷矿资源丰富,但近年来探明储量持续下降,加强磷矿资源勘查迫在眉睫。本文在对工作区161处磷矿床(点)资料系统梳理的基础上,总结了区内磷矿床成因类型,并划分3个矿产预测类型5种预测方法;对不同类型磷矿床成矿特征、空间赋存规律进行了总结,并探讨了物质来源,认为华北地区沉积型和沉积变质型磷矿床物质来源于古陆物质的长期风化和海洋生物作用;岩浆型磷矿床物质来源于偏碱性、基性及超基性岩。沉积型磷矿主要形成于震旦纪、寒武世第二期;中元古代为变质型磷矿主成矿期,岩浆型磷矿成矿时代集中于中元古代、印支期和燕山期。全区圈定磷矿最小预测区14处,对其中6处重要预测并进行了资源潜力分析。更多还原

【Abstract】 Phosphorite resources are abundant in North China and their exploration become very important due to Proven reserves decreased continuously. Based on the data of 161 phosphorous ore deposits and ore occurrences,we summarized the phosphorus deposits metallogenic types and divided into 3 prediction types and 5 prediction methods. As well, the character of mineralized and the regularities of space occurrence on the main ore types and geological genesis of the phosphorous deposits have been summarized. We thought sedimentary and sedimentary metamorphic phosphorous deposits were derived from the long-term weathering of ancient land materials and the action of Marine organisms and the magmatic phosphate deposits derived from alkaline-ferric, basic rocks and ultrabasic rocks. Sedimentary phosphorous deposits were formed in the Sinian, Series 2 of Cambrian,metamorphic phosphorous deposits were formed in Mesoproterozoic and magmatic phosphorous deposits were formed in Mesoproterozoic, Indosinian and Yanshanian epoch. According to the analysis of metallogenic conditions and prospecting potential, 14 minimum prospecting areas are set up and 6 important prospecting areas analyzed their potential of resources.更多还原