摘要
贵州开阳磷矿东翼矿区是新发现的特大型富磷矿床,洋水组是磷矿主要产出层位。以研究区磷矿石特征为出发点,划分矿石类型,结果显示:磷矿石类型以砂-砾屑磷块岩最为常见,叠层石磷块岩次之,其它类型较为少见。不同类型磷块岩对应不同特殊的沉积环境。总体上,研究区处于潮间带-潮下高能带区域,导致先沉积的泥晶磷块岩历经了多期次的沉积-破碎-波选-冲洗-再沉积作用,最终形成高品位磷块岩。
The Dongyi mining area of Kaiyang phosphate mine in Guizhou province is a newly discovered super-large phosphate-rich deposit, and Yangshui formation is the main occurrence horizon of phosphate deposits. Based on the characteristics of phosphate ores in the study area, the ore types were divided, and the results showed that: Sand-gravel phosphate rock is the most common type of phosphate rock, followed by stromatolite phosphate rock, and other types are relatively rare. Different types of phosphorites correspond to different special sedimentary environments. On the whole, the study area is located in the intertidal zone-subtidal high-energy zone, which leads to the formation of high-grade phosphorus blocks after multiple stages of depositional, crushing, wave separation, flushing and redeposition of the micritic phosphorus blocks.
作者
雷灵芳
Lei Lingfang(Guizhou Geological Prospecting Institute of China Chemical Geology and Mine Bureau, Guiyang, Guizhou, 550002, China)
出处
《化工矿产地质》
CAS
2019年第3期158-162,共5页
Geology of Chemical Minerals
关键词
洋水组
磷矿石类型
沉积环境
Yangshui Formation
Phosphorite types
Sedimentary environments
作者简介
雷灵芳(1985~),女,主要从事固体矿产勘查与研究工作,工程师,E-mail:34894976@qq.com.
