| 赵明峰,金齐钊,陈学治.贵州省桂花地区饰面用灰岩矿地质特征及矿床成因[J].矿产勘查,2024,15(12):2281-2289 |
| 贵州省桂花地区饰面用灰岩矿地质特征及矿床成因 |
| Preliminary exploration into the geological characteristics and origins of decorative limestone deposits in the Guihua area of Guizhou Province |
| 投稿时间：2022-06-07 |
| DOI：10.20008/j.kckc.202412011 |
| 中文关键词: 饰面石材 地质特征 清虚洞组 豹皮灰岩 矿床成因 |
| 英文关键词: facing stone geological characteristics Qingxudong Formation leopardskin limestone genesis of ore deposits |
| 基金项目: |
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| 摘要点击次数: 370 |
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| 中文摘要: |
| 贵州省金沙县桂花地区优质饰面用灰岩矿十分发育，具有很好的开发利用及研究价值。前人针对该地区仅开展过区域性调查评价工作，并未开展过矿床地质方面的研究。因此，本文通过系统地野外地质勘查、取样分析测试及研究工作，总结了桂花地区饰面用灰岩矿的矿床地质特征，并初步探讨了桂花地区饰面用灰岩矿的矿床成因。桂花地区饰面用灰岩矿主要赋存于寒武系第二统清虚洞组，分 a、b两个矿层:a矿层岩性为豹皮灰岩，矿石花色品种为“晶墨玉之斑点”，b矿层岩性为白云质灰岩夹豹皮状灰岩，矿石花色品种为“芝麻黑”和“晶墨玉之斑点”。清虚洞组灰岩形成于寒武纪第二世时期的局限台地相沉积环境，灰岩在成岩过程中沿着层面或者渗透性较好的斑块发生白云岩化，最终形成桂花地区的白云质灰岩和豹皮灰岩。 |
| 英文摘要: |
| In the Guihua area of Jinsha County, Guizhou Province, extensive high-quality limestone resources suitable for decorative applications exhibit significant potential for both development and research. Previous work inthis region has primarily consisted of regional surveys and evaluations, with limited attention given to the geologicalcharacteristics of these deposits. Accordingly, this study undertakes systematic field investigations, sample collec.tion, laboratory analyses, and comprehensive research to elucidate the decorative limestone deposits′ geological at.tributes and offer preliminary insights into their genesis. The deposits predominantly occur within the QingxudongFormation of the Cambrian Series 2 and can be divided into two mineralized layers. Layer a comprises leopard-skinlimestone (commercially called "crystal ink jade with spots"). In contrast, Layer b consists of dolomitic limestone in.tercalated with leopard-skin limestone, resulting in varieties known as "sesame black" and "crystal ink jade withspots." These limestones formed in a restricted platform depositional environment, and during diagenesis, dolomiti.zation occurred along bedding planes or in permeable patches, ultimately giving rise to the dolomitic limestone andleopard-skin limestone observed in the Guihua area. |
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