CAJ | 학술논문

为了探讨花岗岩的萤石成矿专属性特征，在系统搜集前人成果基础上，对南岭东段北部产萤石花岗岩和非产萤石花岗岩开展了元素地球化学测试和黑云母电子探针分析(EPMA)与对比。结果表明：产萤石花岗岩主要为黑云母花岗岩，属于高钾钙碱性系列，副矿物组合中常见萤石；加里东期、印支期和燕山期的花岗岩均具有形成萤石矿床的可能性，以燕山早期花岗岩的潜力最大。与非产萤石花岗岩相比，产萤石花岗岩具较高的Mo含量和较低的Th/U比值；其黑云母主要为铁质黑云母和铁叶云母，比非产萤石花岗岩的黑云母(主要为铁白云母和铁叶云母)更富TiO2、MgO、Cl、F而贫Al2O3、FeO+Fe2O3；黑云母的F与Cl含量呈正相关，而与Al2O3含量呈负相关；产萤石花岗岩形成于相对高温、低压和高氧逸度的环境，岩浆来源主要为地壳，但有少量幔源，与钨多金属矿床关系较为密切。
위료탐토화강암적형석성광전속성특정，재계통수집전인성과기출상，대남령동단북부산형석화강암화비산형석화강암개전료원소지구화학측시화흑운모전자탐침분석(EPMA)여대비。결과표명：산형석화강암주요위흑운모화강암，속우고갑개감성계렬，부광물조합중상견형석；가리동기、인지기화연산기적화강암균구유형성형석광상적가능성，이연산조기화강암적잠력최대。여비산형석화강암상비，산형석화강암구교고적Mo함량화교저적Th/U비치；기흑운모주요위철질흑운모화철협운모，비비산형석화강암적흑운모(주요위철백운모화철협운모)경부TiO2、MgO、Cl、F이빈Al2O3、FeO+Fe2O3；흑운모적F여Cl함량정정상관，이여Al2O3함량정부상관；산형석화강암형성우상대고온、저압화고양일도적배경，암장래원주요위지각，단유소량만원，여오다금속광상관계교위밀절。
Fluorite deposits in the northern part of the eastern Nanling region are intimately associated with granitic intrusions. To investigate their fluorite-metallogenetic specialization, the chemical compositions of biotites and whole rock of the granites were analyzed. The granites are divided into two groups: fluorite-bearing and fluorite-barren granites. The fluorite-bearing granites are mainly biotite granites, high potassium calc-alkaline, whose accessory minerals commonly include fluorite. The fluorite-bearing granites have higher Mo contents and lower Th/U ratios than those of the fluorite-barren counterparts. Biotite in the fluorite-bearing granites is ferruginous biotite and siderophyllite biotite, which are characterized by higher contents of TiO2, MgO, Cl, and F and lower contents of Al2O3, TFe2O3 than those of the fluorite-barren granites. F and Cl contents of the fluorite-bearing granites show an obvious positive correlation, while the F and Al2O3 contents negatively correlated. The compositions of the biotites indicate that the fluorite-bearing granites were mainly derived from crustal sources with involvement of the mantle, and crystallized at conditions of high temperature, low pressure and high fO2.