河南卢氏南阳山地区稀有金属矿床矿物学特征及矿化类型

Mineralogical characteristics and mineralization types of rare metal deposits in Nanyang mountain area of Lushi, Henan province

河南省卢氏县是我国重要的稀有金属产地之一,其中官坡镇矿集区为典型的稀有金属矿床。本文选取南阳山地区稀有金属矿为研究对象,应用光谱分析、全岩化学成分分析、电子探针分析等手段,详细研究了其含锂矿物矿物学特征,结果显示,矿石中主要元素为锂、钽、铌,铍、铷、铯达到了伴生含量要求;锂主要赋存在锂辉石中,铌、钽主要赋存在铌钽铁矿并形成独立矿物,铷、铯主要赋存在白云母和长石中,铍主要赋存在绿柱石中。本文还总结了南阳山地区不同花岗伟晶岩的矿化类型:(Ⅰ)黑电气石微斜长石型;(Ⅱ)含黑电气石钠长石型;(Ⅲ)白云母锂辉石钠长石型;(Ⅳ)锂云母钠长石型。本研究为该地区锂和其他稀有金属的综合开发利用提供了基础地质资料,并为东秦岭地区进一步寻找稀有金属提供依据。

Lushi county of Henan province is one of the important rare metal producing areas in China,among which Guanpo town mining area is a typical rare metal deposit base.This article selects rare metals in the Nanyang region as the research object,the application of spectrometry,whole rock chemical composition analysis,electron microprobe analysis,and other methods,a detailed study of the lithium mineral mineralogy characteristics,the results showed that the main elements in the ore for lithium,tantalum,niobium,beryllium,rubidium,cesium reached associated content requirements;Lithium mainly occurs in lithium pyroxene,niobium and tantalum mainly occur in niobium-tantalite and form independent minerals,rubidium and cesium mainly occur in Muscovite and feldspar,and beryllium mainly occurs in beryl.This article also summarizes the Nanyang mountain mineralization of different granite pegmatite type:(Ⅰ)black electrical ore microscope plagioclase type;(Ⅱ)including black tourmaline albite type;(Ⅲ)white mica spodumene albite type;(Ⅳ)lithium mica albite type.This study provides basic geological data for the comprehensive exploitation and utilization of lithium and other rare metals in the deposit and provides basis for the continuous search for rare metals in the East Qinling region.