河北灵寿蛭石晶体化学特征与层间水化行为
The crystal chemical characteristics and interlaminar hydration behavior of the vermiculite in Lingshou County, Hebei Province, China
查看参考文献32篇
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文摘
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河北灵寿蛭石是矿物学意义上的蛭石,其晶体化学特征对蛭石的开发应用具有重要的意义。本文利用X射线衍射(XRD)、化学分析(XRF)、红外光谱(FTIR)、热分析(TG-DTG)等技术对提纯后的河北灵寿蛭石矿物的成分和晶体结构等矿物学特征进行了研究。在此基础上,通过控制不同相对湿度条件,考察了晶体化学特性对蛭石层间水化行为的影响。结果表明,河北灵寿蛭石属于矿物学意义上的三八面体蛭石,层间水化阳离子为Ca~(2+),平均层电荷数为0.61 eq/O_(10)(OH)_2(半晶胞)。晶层之间电荷分布不均匀,表现为部分层间域中含有一定量的K~+。该蛭石具弱膨胀性,其d_(002)随环境湿度不同而变化。 |
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其他语种文摘
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The crystal chemical characteristics of the Lingshou vermiculite, a mineral defined by using XRD, in Hebei Province are significantly important for its development and application. In this work, the XRD, XRF, FTIR, and TG-DTG techniques are applied to study mineralogical characteristics including mineral composition and crystal structure of the purified vermiculite samples in Lingshou County, Hebei Province. On the basis of above works, the effects of crystal properties on the hydration behavior of vermiculite have been investigated by controlling conditions of different relative humidities. The results show that the Lingshou vermiculite is a trioctahedral one with the interlaminar hydration cation of Ca~(2+) and average layer charge of 0.61 eq/O_(10)(OH)_2 (half unit cell). The inhomogeneous charge distribution between different crystal layers is represented by a certain amount of K~+ contained in partial interlamination. The d_(002) values of vermiculite samples, which have weak expandability, vary with the variation of ambient humidities. |
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来源
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矿物学报
,2019,39(6):673-680 【核心库】
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DOI
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10.16461/j.cnki.1000-4734.2019.39.072
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关键词
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灵寿
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蛭石
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晶体化学
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层间水化
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地址
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1.
中国科学院广州地球化学研究所, 中国科学院矿物学与成矿学重点实验室;;广东省矿物物理与材料研究开发重点实验室, 广东, 广州, 510640
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景德镇陶瓷大学材料科学与工程学院, 江西, 景德镇, 333001
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中国科学院大学, 北京, 100049
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-4734 |
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学科
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地质学 |
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基金
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国家自然科学基金项目
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广东省科技计划项目
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广东省矿物物理与材料研究开发重点实验室开放基金
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广东省特支计划青年拔尖人才基金项目
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文献收藏号
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CSCD:6628949
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