赣南大埠重稀土矿床矿化富集规律与控矿因素研究

发布时间：2018-03-21 05:29

本文选题：赣南　切入点：大埠重稀土矿床　出处：《稀土》2017年02期 　论文类型：期刊论文

【摘要】：大埠花岗岩体风化壳中离子型稀土资源潜力大,被赣州市政府认定为赣南5个重稀土重点勘查区之一;大埠重稀土矿床是已查明的与该岩体相关的主要稀土矿床,研究其矿化富集规律和控矿因素对进一步找矿勘探工作具有重要意义。对大埠重稀土矿床探矿浅井品位和厚度资料及数字地形的统计和分形分析表明,矿体的品位和厚度主要受原岩的稀土总含量及地形地貌控制,地形多重分形幅宽Δα可以作为一种可靠的量化指标指示矿化富集规律,但难于精确地刻画矿化富集的空间分布;这是因为离子型稀土床的矿化富集是内、外生各种地质作用及环境因素和人类活动综合作用的结果。就某一矿区而言,矿体的品位和厚度虽然总体上受原岩的稀土总含量和地形地貌控制,但坡向、景观配置、母岩物质组成和结构的不均一性及人类活动等对矿体局部品位和厚度也有重要影响。
[Abstract]:The ion type rare earth resources in the weathering crust of the Dabu granite body have great potential and are regarded by the Ganzhou government as one of the five important exploration areas of heavy rare earths in south Jiangxi, and the Dabu heavy rare earth deposit is the main rare earth deposit related to the rock mass that has been identified. It is of great significance to study the regularity of mineralization enrichment and ore-controlling factors for further prospecting and exploration. The statistical and fractal analysis of the grade and thickness of shallow wells and digital topography of the Dabu heavy rare earth deposit shows that, The grade and thickness of orebody are mainly controlled by the total content of rare earth and landform of the original rock. The multifractal width 螖伪 can be used as a reliable quantitative index to indicate the regularity of mineralization enrichment, but it is difficult to accurately depict the spatial distribution of mineralization enrichment. This is because the mineralization and enrichment of the ion rare earth bed is the result of various geological processes, environmental factors and human activities. Although the grade and thickness of ore body are generally controlled by the total content of rare earth and landform of the original rock, the slope direction, the landscape configuration, the heterogeneity of the composition and structure of the parent rock and the human activities also have an important influence on the local grade and thickness of the orebody.
【作者单位】：江西理工大学资源与环境工程学院江西省稀土资源高效利用重点实验室;
【基金】：国家自然科学基金项目(41063001) 江西省级大学生创新创业训练计划项目(201310407036)
【分类号】：P618.7

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