| 淡水珍珠中球文石的XRD谱 |
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| 引用本文： | 马红艳,崔福斋.淡水珍珠中球文石的XRD谱[J].矿物学报,2003,23(4):371-373. |
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| 作者姓名： | 马红艳 崔福斋 |
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| 作者单位： | 1. 广西大学,化学化工学院,广西,南宁,530005
2. 清华大学,材料系,北京,100084 |
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| 基金项目： | 国家自然科学基金项目(批准号:20266002) |
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| 摘 要： | 球文石是CaCO3的同质多象变体，在自然界中很少出现。对不同质量淡水珍珠进行XRD物相分析，结果表明不同颜色的优质淡水珍珠中几乎全部由文石组成，方解石不发育；劣质淡水珍珠中主要含有文石、球文石；在劣质的淡水无光珠发现有球文石，可能与这些珍珠混有较多的有机物有关，文中例举了含球文石与不含球文石的淡水珍珠XRD谱。
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| 关 键 词： | 淡水珍珠 球文石 生物成矿 XRD谱 |
| 文章编号： | 1000-4734(2003)04-0371-03 |
| 修稿时间： | 2003年3月2日 |
XRD PATTERNS OF VATERITE IN BIOMINERALIZED FRESHWATER PEARLS |
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| MA Hong-yan,CUI Fu-zhai.XRD PATTERNS OF VATERITE IN BIOMINERALIZED FRESHWATER PEARLS[J].Acta Mineralogica Sinica,2003,23(4):371-373. |
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| Authors: | MA Hong-yan CUI Fu-zhai |
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| Institution: | MA Hong-yan~1,CUI Fu-zhai~2 |
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| Abstract: | Different luster freshwater pearls (consisting of calcium carbonate) in China were examined with X-ray diffraction (XRD). The main component of good- quality freshwater pearls is aragonite in all cases. Only a trace amount of calcite (<2%) was found, but in some cases, a miner amount of vaterite was detectable in some lusterless freshwater pearls. Vaterite is a very unstable polymorph of calcium carbonate, rarely occurring in nature. This paper presents the XRD patterns of vaterite in poor-quality fresh water pearls. |
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| Keywords: | freshwater cultured pearl vaterite biomineralization XRD pattern |
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