拉萨贾木村水泥用石灰岩矿床地质特征及成因探究  

Geological Characteristics and Genesis of Cement Limestone Mine in Jiamu Village, Lhasa

作　　者：刘亮[1] 王超 戴元 陈娜 罗绍强[1] 陈小涛[1] LIU Liang;WANG Chao;DAI Yuan;CHEN Na;LUO Shao-qiang;CHEN Xiao-tao(Northwest Sichuan Geological Team of Sichuan Bureau of Geology&Mineral Resources,Mianyang 621010,China)

机构地区：[1]四川省地质矿产勘查开发局川西北地质队

出　　处：《中国非金属矿工业导刊》2019年第4期32-37,共6页China Non-Metallic Minerals industry

摘　　要：通过对拉萨市贾木村南水泥用石灰石矿的调查分析,矿区成矿类型为沉积—变质型,其初始物质来源于上侏罗统多地沟组灰岩,后期随着岩体侵入发生变质和重结晶作用,由内向外形成了大理矿和灰岩矿。矿石品位的高低与岩体距离、原岩成分关系密切。应用SPSS软件对主量元素进行相关性分析,结果表明:同一类型的矿石,愈靠近岩体,其结晶程度愈好,CaO含量愈高,而SiO2、MgO及其他组分含量越低,CaO与其他组分之间为典型的负相关性。Based on the investigation and analysis of the limestone deposit for cement in the south of Jiamu village,Lhasa city,the metallogenic type of the deposit is sedimentary-metamorphic type,its initial material comes from the upper Jurassic Duodigou limestone.With the intrusion of the rock mass,metamorphism and recrystallization occurred in the later period,marble and limestone deposits formed from inside to outside.The ore grade is closely related to the distance of the rock mass and the composition of the original rock.The correlation analysis of the main elements is carried out by SPSS software,the results show that the closer the same type of ore is to the rock mass,the better its crystallinity is,the higher the content of CaO is,and the lower the content of SiO2,MgO and other components.There is a typical negative correlation between CaO and other components.

关 键 词：拉萨 石灰岩矿 沉积—变质型 相关性 

分 类 号：T619.225[一般工业技术]