摘要
开阳磷矿高品位[w(P2O5)>30%]磷矿资源达到16亿t,是世界上磷矿石最富的超大型磷矿床。通过岩相古地理、藻类微生物成矿作用和后期富磷作用研究,认为形成开阳陡山沱组高品位超大型磷矿的主要控制因素为:a.具有独特的古地理格架——长舌状海湾;b.菌藻类微生物的发育在高品位"壳粒磷块岩"形成中起重要作用;c.磷块岩形成过程中,存在多期暴露,由于风化淋漓作用使磷质再富集。
Kaiyang Phosphate Mine has the high-grade [w （P2 O5） 〉30%] phosphate resources up to 1.6 billion tons, which is considered as the richest ultra-large phosphate deposit in the world. By researching the lithofaeies palaeogeography and algae microbial mineralization and later phosphate enrichment action, it is believed that the major control factors for the high-grade super phosphate deposit in Kaiyang Doushantuo Formation are （1） It has an unique palaeogeographic framework-long tongue shape in the gulf~ （2） The growth of homonemeae microorganism, which plays an important role in the high grade ＂shell＂ grain of phos- phate ore formationl （3） There are multiphase exposures in the process of phosphate formation and weathering effect, and phos- phate is enriched due to weathering and dripping wet effect.
出处
《化工矿物与加工》
北大核心
2017年第7期33-37,55,共6页
Industrial Minerals & Processing
基金
贵州省国土厅基础性
公益性项目(2012006)
中国地质调查局"贵州开阳地区富磷矿整装勘查区专项填图与技术应用示范(12120114016501)"
"贵州省开阳以东磷矿整装勘查区矿产调查与找矿预测(0747-1661SITCN131)"项目
贵州省地质矿产勘查开发局"贵州震旦系磷矿成矿地质条件和成矿作用研究(黔地矿办发[2013]56号)"项目
关键词
风化作用
生物作用
古地理
富磷机理
开阳磷矿
weathering
biological action
paleogeography t phos- phorus enrichment mechanism tphosphate deposit in Kaiyang
