| 黔北务川瓦厂坪铝土矿床元素迁移规律研究 |
| |
| 引用本文： | 金中国.黔北务川瓦厂坪铝土矿床元素迁移规律研究[J].地质与勘探,2011,47(6):957-966. |
| |
| 作者姓名： | 金中国 |
| |
| 作者单位： | 1. 贵州省有色金属和核工业地质勘查局,贵州贵阳,550005
2. 中国科学院地球化学研究所,贵州贵阳,550001 |
| |
| 基金项目： | 中国地质大调查项目(项目编号:[ 2006 ]004- 06) 和贵州省公益性、基础性研究项目(项目编号:[ 2007 ]-172)资助 |
| |
| 摘 要： | 黔北务正道地区铝土矿矿床属古风化壳沉积型，成矿母岩具多源性，但主要来源于下覆的中下志留统韩家店组。本文依据Grant提出的质量平衡方程和图解法，对瓦厂坪矿床在成矿过程中元素迁移的富集、贫化（亏损）规律进行了定量研究。结果表明，主要成矿母岩韩家店组砂、页岩一中间产物铝土质页岩、粘土岩是主要元素A12O3、TiO2显著富集...
|
| 关 键 词： | 元素迁移规律 地球化学 铝土矿 瓦厂坪 贵州务川 |
| 收稿时间： | 8/1/2010 12:00:00 AM |
| 修稿时间： | 5/6/2011 12:00:00 AM |
Regularities of Elements Migration in the Wachangping Bauxite Deposit in
Wuchuan County,Northern Guizhou Province |
| |
| JIN Zhong-guo.Regularities of Elements Migration in the Wachangping Bauxite Deposit in
Wuchuan County,Northern Guizhou Province[J].Geology and Prospecting,2011,47(6):957-966. |
| |
| Authors: | JIN Zhong-guo |
| |
| Institution: | Guizhou Nonferrous Metal and Nuclear Industry Geological Exploration Bureau,Guiyang,Guizhou |
| |
| Abstract: | Abstract:The bauxite deposits in the Wuchuan-Zhengan-Daozhen area of northern Guizhou Province are of the sedimentary paleo-weathered crust type. The host rocks are mainly from the underlying middle and lower Silurian Hanjiadian Formation and other sources. Based on the mass balance equation and graphic methods proposed by Grant,element enrichment and dilution rules of element migration in the ore-forming process in the Wachangping bauxite
deposit were quantitatively investigated. The results show that during the conversion of Hanjiadian Fm. sandstone and shale as host rocks to the intermediateproduct bauxitic shale,which was an important stage of aluminous enrichment,the bauxite was markedly depleted in SiO2,Fe2O3 ,MgO ,CaO and K2O,while the major elements of Al2O3 and TiO2 were significantly enriched. In the conversion process of bauxitic shale to dense and compact bauxites,major elements of Fe2O3,MnO,MgO,CaO,and K2O were markedly enriched,while enrichment of Al2O3 was weak,and SiO2 and Na2O were depleted. The compounds of Al2O3,TiO2,and MgO were enriched furthermore by the effects of secondary action. During the bauxite ore-forming process,inert elements were enriched markedly,while the active elements were reduced gradually. All these reflect the characteristics of weathering,migration and then enrichment and mineralization. |
| |
| Keywords: | element migration rule geochemistry bauxite Wangchangping Wuchuan county in Guizhou Province |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地质与勘探》浏览原始摘要信息 |
| 点击此处可从《地质与勘探》下载免费的PDF全文 |
|
