| 覃志安.湖北张家泉铝土矿的地质特征及风暴作用在铝土矿形成过程中的影响[J].地质找矿论丛,1991,(2):59-70 |
| 湖北张家泉铝土矿的地质特征及风暴作用在铝土矿形成过程中的影响 |
| THE GEOLOGICAL FEATURE OF ZHANGJIAQUAN BAUXITE IN HUBEI PROVINCE AND THE INFLUENCE OF STORM ON THE FORMATION OF BAUXITE |
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| DOI：10.6053/j.issn.1001-1412.1991.2. 006 |
| 中文关键词: 铝土矿 地质特征 物质来源 风暴作用 |
| 英文关键词: |
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| 摘要点击次数: 1183 |
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| 中文摘要: |
| 通过研究,发现该铝土矿成分复杂,Al2O3含量不高且变化较大,Fe2O3含量高且变化大,矿石的结构构造也很特殊,其中碎屑呈棱角状、具塑性变形现象。文中根据Al2O3/TiO2、Ga/Al2O3、微量元素和碎屑重矿物等认为铝土矿原始物质主要来自基底岩石红土风化残余,其沉积环境为滨海淡化泻湖。作者认为铝土矿中上部位是较典型的风暴沉积产物,风暴作用在铝土矿形成过程中影响较大。 |
| 英文摘要: |
| In this study the author has discovered the complexity of composition in bauxite.The Al2O3 content is not very high, but widely changes.Fe2O3 is high and greatly varies.The bauxite is mainly derived from weathered residuum of basal clay sandstone, deposited in lagoon envirnment.The fabric of bauxite ore is also very special.Fragments are of ten angular with plastic deformation.There are sev-eral kinds of pisolite and oolite in bauxite.Some of them are larger with many contraction fissures, si-miliar to those in Australia lateritic bauxite.Some are in medium size with many layers.Others are small, rich in Fe2O3.there is an irregular erosional surface between clastic and massive bauxites.The thickness of clastic bauxite is very changeable.Furthermore, graded structure is found in clastic bauxite.It is suggested that the bauxite is typical sediment of storm. |
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