江苏溧水爱景山锶矿床天青石形态特征及成矿过程探讨  

Discussion on morphological characteristics of celestite and metallogenic processes of Aijingshan strontium deposit in Lishui county,Jiangsu province

作　　者：陆振云 刘新光 骆光新 吴正兵 朱冬生 LU Zhenyun;LIU Xinguang;LUO Guangxin;WU Zhengbing;ZHU Dongsheng(Jiangsu Jinyan Strontium Industry Co.,Ltd.,Lishui 211200,Jiangsu,China)

机构地区：[1]江苏金焰锶业有限公司,江苏溧水211200

出　　处：《地质找矿论丛》2024年第1期73-79,共7页Contributions to Geology and Mineral Resources Research

基　　金：江苏金焰锶业有限公司“爱景山锶矿地下开采延深工程”项目资助。

摘　　要：江苏溧水锶矿是我国火山热液型锶矿床的典型代表。本文通过对该矿床中的矿石宏观形态观察和显微岩相学研究,讨论了与天青石的形态特征相对应的成矿作用过程。结果表明,锶矿中天青石的形态主要有板状型、角砾型、细脉型、它形细粒型、柱状型、细脉团块型等。板状型主要形成于早期成矿阶段(主成矿期);角砾型是在板状型基础上受中期构造活动影响发育而成(构造活动期);细粒薄片状构成的细脉型发育于板状型之间的裂隙中,它形细粒型发育于破碎黄铁矿之间,柱状型发育张性裂隙中,它们属于晚期成矿阶段(次成矿期)的充填或自生长;细脉团块型在整个成矿作用过程有出现,主要发育于围岩中。The Aijingshan strontium deposit is a typical volcanic hydrothermal deposit.Macroscopic morphological and microscopic petrographic observation of the strontium ore show that morphological characteristics of celestite are correspondent to metallogenic processes.Celestite occurs mainly in plate,breccia,veinlet,fine xenomorphic,clumnar and veinlet-massive morphology.The plate crystal celestite is formed in the early(main)metallogenic stage.Breccia celestite is developed during middle active tectonic period from the early plate crystal.The veinlet consisting of fine grain-thin plate celestite is developed in cracks of the plate celestite,xenomorphic fine grained celestite developed between fractured pyrite,columnar celestite in tensile cracks suggesting that they belong to late metallogenic stage.The veinlet-fine grained massive celestite appears throughout the whole metallogenic process occurring mainly in the wall rock.

关 键 词：锶矿床 天青石 形态特征 成矿过程 江苏溧水 

分 类 号：P618.78[天文地球—矿床学]