陕西商南湘河石墨矿矿物学特征
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摘要
陕西商南湘河石墨矿是陕西省内具有巨大潜力的矿产资源,运用光、薄片分析及透射电镜(TEM)显微形貌和电子衍射分析、场发射扫描电镜(FE-SEM)显微形貌分析、X射线衍射分析,初步研究了该地石墨矿物学特征。结果表明,湘河石墨矿为晶质石墨,呈细鳞片状,片径大部分为1～45μm之间。高分辩图显示出明显的层状晶格条纹,表现出层状堆积的石墨结构。通过电子衍射分析,石墨鳞片呈规则点阵,显示为单晶结构,石墨单晶的六方形衍射图案显示晶质石墨样品晶体结构较为完善。石墨化度在0.508～0.732之间,与同成矿带内已开发利用的河南淅川小陡岭石墨矿相似。
The Xianghe graphite deposit in the Shangnan area, Shaanxi Province is a deposit with great potential of resources. Based on microscopic observation, transmission electron microscopy(TEM) microscopic morphology and electron diffraction analysis, field emission scanning electron microscope(FE-SEM) microscopic morphological analysis of polished and/or thin sections of samples and X-ray diffraction analysis of samples, mineralogical characteristics of graphite in the deposit have been basically studied in this paper. The results show that the graphite of the Xianghe graphite deposit is a kind of fine flaky crystalline graphite with most of its sizes varying from 1μm to 45 μm. It can be seen in high resolution images that the graphite has obvious layered lattice fringes, showing a layer-accumulated graphite structure. The electron diffraction analysis show that the graphite flake has a regular lattice, reflecting a single crystal structure. The hexagonal diffraction pattern of the graphite single crystal shows that it has relatively perfect crystal structure. The degree of graphitization is between 0.508 and 0.732, like that of the Xiaotuoling graphite mine in the Zhechuan area, Henan Province, which is the one being mined for development and utilization within the metallogenic belt.
The Xianghe graphite deposit in the Shangnan area, Shaanxi Province is a deposit with great potential of resources. Based on microscopic observation, transmission electron microscopy(TEM) microscopic morphology and electron diffraction analysis, field emission scanning electron microscope(FE-SEM) microscopic morphological analysis of polished and/or thin sections of samples and X-ray diffraction analysis of samples, mineralogical characteristics of graphite in the deposit have been basically studied in this paper. The results show that the graphite of the Xianghe graphite deposit is a kind of fine flaky crystalline graphite with most of its sizes varying from 1μm to 45 μm. It can be seen in high resolution images that the graphite has obvious layered lattice fringes, showing a layer-accumulated graphite structure. The electron diffraction analysis show that the graphite flake has a regular lattice, reflecting a single crystal structure. The hexagonal diffraction pattern of the graphite single crystal shows that it has relatively perfect crystal structure. The degree of graphitization is between 0.508 and 0.732, like that of the Xiaotuoling graphite mine in the Zhechuan area, Henan Province, which is the one being mined for development and utilization within the metallogenic belt.
引文
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[2]饶娟,张盼,何帅,等.天然石墨利用现状及石墨制品综述[J].中国科学:技术科学, 2017, 47:13-31.
[3]传秀云.石墨资源状况和产业发展前景[J].高科技与产业化, 2014(2):50-55.
[4]高天明,陈其慎,于汶加,等.中国天然石墨未来需求与发展展望[J].资源科学, 2015, 37(5):1059-1067.
[5]薛天闯,杨士辉,沈坤,等.河南省石墨矿床分布特征及找矿方向[J].中州煤炭, 2016(9):155-158.
[6]陈蔚然,石墨化度[J].炭素技术, 1990(4):40-43.
[7]陈蔚然.关于石墨化度计算公式[J].炭素技术, 1983(6):28-32.
[8]王克勤.石墨矿物的一些基本性质及与变质程度关系初探[J].建材地质, 1989(6):11-17.
[9]莫如爵,刘绍斌,黄翠蓉,等.中国石墨矿床地质[M].北京:中国建筑工业出版社, 1989:10-13.
[10]胡鸿雁,涂文懋,李小波,等.超细天然鳞片石墨酸化研究[J].炭素技术, 2009, 28(6):16-19.
[11]赵天宇,杨程,宋洪松.原料尺寸对氧化石墨与石墨烯性能的影响[J].材料工程, 2014(9):76-82.
[12]鲜海洋,彭同江,孙红娟,等.我国若干典型石墨矿山石墨的矿物学特征[J].矿物学报, 2015, 35(3):395-405.