摘要
王集磷矿矿石类型有三种:灰色纹层状磷块岩(产于Ph1),紫灰色纹层状磷块岩(产于Ph1),黑灰色薄纹层状磷块岩(产于Ph3)。三种矿石主要常量及微量化学成分含量存在一定的差异。稀土元素分布模式均呈轻稀土轻度富集型,Ph3矿石Ce略有亏损。成矿物质源于秦岭海槽、地球深部;成矿介质为富磷硅的热卤水,运移过程中受到海水钙质和碳质的混染。成矿介质与海水的比重差和洋流使成矿介质运移就位于扬子地台北缘水下凹地,温度降低和微生物作用使成矿介质中的活性碳大幅度减少,导致磷灰石结晶析出成矿。鄂西广大地区仍有良好的找矿前景。
There are three types of Wangji phosphorite including gray lamina phosphorite in Ph l, purple-gray lamina phosphorite in Phl and black ash thin lamina phosphorite in Ph3, all of which have the different content of constant and microchemical constituent. Their rare earths elements thows light enrichment but depletion in Ce. The mineral materials are from Qinling trough and the deep earth. As the mineral medium, the hot salt brine with high phosphorus and silicon are mix with sea autunite and carbon. The mineral medium moved to the underwater valley at the north edge of Yantze Platform by the pecific gravity difference of sea water and ocean current, and the activated carbon reduce by the temperature reduce and animalcule action, all of which cause the apatite seed out. Some large scale area still have the better prospecting potential.
出处
《化工矿产地质》
CAS
2015年第4期198-204,共7页
Geology of Chemical Minerals
关键词
矿石类型
化学成分
热水沉积
找矿前景
湖北荆门
miemal types, chemical constituent, hot water sediment, prospecting potential, jingmen city, hubeiprovince
