桂林理工大学学报2016，Vol.36Issue(2)：223-227,5.DOI:10.3969/j.issn.1674-9057.2016.02.004
纳米比亚 Kaokoveld 透视石的矿物学特征
Mineralogical characteristics of dioptase from Kaokoveld,Namibia
摘要
Abstract
Mineralogical characteristics of Kaokoveld dioptase is investgated by X-ray power analysis,infrared spectroscopic analysis,electronprobe wave spectrum analysis,IR spectra,Raman spectra and Uv-vis spectra a-nalysis.The dioptase with the associations of quartz and endlichite,and green to light cyan columanar crystals combinated by hexagonal prism and rhombohedron,occurs in Kaokoveld,Kunene region,Namibia.The elec-tron-microprobe analyses show that the CuO contents vary from 45.02% to 45.48%,and SiO2 contents vary from 42.33% to 42.69% in dioptase,different from Tsumeb dioptase and Tantara dioptase.Changes in chemi-cal composition lead to a slight contraction of the crystal structure.It is the main reasons causing the changes of peak intensity and position of the Diop-Ka IR spectrum from 900 cm -1 to 1 200 cm -1 and Raman spectrum in the vicinity of 561 cm -1 ,800 cm -1 and 836 cm -1 .The maximum transmission rate of Kaokoveld dioptase is near 500 nm,resulting in the crystal with the green to light cyan.关键词
透视石/矿物组合/光谱特征/卡奥科费尔德/库内内/纳米比亚Key words
dioptase/mineral assemblage/spectral characteristics/Kaokoveld/Kunene region/Namibia分类
地质学引用本文复制引用
阮青锋,宋林,杨杨,朱世超,白芳芳..纳米比亚 Kaokoveld 透视石的矿物学特征[J].桂林理工大学学报,2016,36(2):223-227,5.基金项目
国家自然科学基金项目 （）
