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요약정보
市场中一种孔雀石相似材料的宝石学特征 / Gemological Characteristics of AMalachite Similar Material in the Market
Resource Type
Academic Journal
Authors
徐娅芬
;
刘衔宇
;
XU Yafen
;
LIU Xianyu
Source
超硬材料工程 / Superhard Material Engineering
. 32(6):50-56
Subject
仿孔雀石
孔雀石
宝石学特征
重晶石
Language
Chinese
ISSN
1673-1433
Online Access
Find it @ DONGA
초록
针对近期珠宝市场上常见的一种孔雀石相似材料,主要利用常规宝石学仪器、偏光显微镜、傅里叶红外光谱仪、X射线粉晶衍射仪、紫外-可见光谱仪对其进行了宝石学特征的研究,并将其与天然孔雀石对比.研究结果表明,该种材料中的主要矿物成分为重晶石和少量的方解石,且矿物颗粒极其细小,肉眼及光学显微镜下不可见;相对硬度为2.38左右,紫外荧光灯下为惰性,其纹路特征过于"呆滞",与天然孔雀石略有差异;650nm的紫外可见吸收峰,表明该种材料的颜色与有机物有关;红外光谱和偏光显微镜观察结果表明该种材料中还存在起着胶结作用的高分子有机物.因此,可以确定该种与孔雀石相似的材料是将极为细小的重晶石和方解石通过高分子有机物胶结在一起形成,可通过显微镜、相对密度、傅里叶红外光谱和紫外可见光谱等特征分析将其与天然孔雀石加以区分.
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