论文部分内容阅读
运用MLA、偏光显微镜、化学分析、电子探针等测试手段,对湖北某正长岩-正长斑岩型稀土矿石的化学成分、元素分配、嵌布特征、解离度等工艺矿物学参数进行了详细的研究,确定了稀土矿物的种类及赋存状态。稀土元素有两种存在形式,其中以独立矿物形式存在的占90.66%,主要形成独居石、氟碳铈矿、氟碳钙铈矿和褐帘石;分散状态占9.34%,稀土元素作为类质同象形式或显微包裹体导致分散。稀土矿物嵌布粒度普遍较细,独居石粒径一般0.02 mm~0.03 mm;氟碳酸盐矿物粒径一般0.01 mm~0.02 mm;褐帘石粒径一般0.01 mm~0.03 mm。稀土矿物与伴生矿物的嵌布形式复杂多样,主要与方解石、铁白云石、长石等伴生矿物密切连生。
The mineralogical parameters such as chemical composition, elemental distribution, inlaid features and dissociation of a certain type of Zhengchang rock-orthoclase porphyry in Hubei are studied by MLA, polarized light microscope, chemical analysis and electronic probe. A detailed study to determine the type of rare earth minerals and occurrence status. Rare earth elements exist in two forms, of which 90.66% exist in the form of independent minerals, forming mainly monazite, bastnaesite, bastnasite and brown curtain stone; the dispersed state accounts for 9.34%, and rare earth elements as a kind Isotactic or micro-inclusions lead to dispersion. The grain size of rare earth minerals is generally thinner, the diameter of monazite is generally 0.02 mm to 0.03 mm, the diameter of fluorocarbon minerals is generally 0.01 mm to 0.02 mm, and the diameter of brown curtain is 0.01 mm to 0.03 mm. The inlaid forms of rare earth minerals and associated minerals are complex and diverse, which are closely linked with associated minerals such as calcite, iron dolomite and feldspar.