| 严志安.硫酸铵浸出-草酸沉淀稀土方法在找矿中的应用－以盈江县新泡山矿区为例[J].地质与勘探,2021,57(4):796-807 |
| 硫酸铵浸出-草酸沉淀稀土方法在找矿中的应用－以盈江县新泡山矿区为例 |
| Application of the ammonium sulfate leaching-oxalic acid precipitating REE method to mineral exploration: An example of the Xinpaoshan mine in Yingjiang county, Yunnan Province |
| 投稿时间：2020-12-10 修订日期：2021-05-31 |
| DOI：10.12134/j.dzykt.2021.04.007 |
| 中文关键词: 硫酸铵浸出-草酸沉淀稀土 找矿应用 盈江地区 云南 |
| 英文关键词: ammonium sulfate leaching – oxalic acid precipitating REE, mineral exploration application, Yingjiang area, Yunnan Province |
| 基金项目:云南省自然资源厅地质勘查基金项目“云南省1:5万盈江县旧城梁河街河头村矿产地质调查”（编
号：D201716）资助 |
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| 中文摘要: |
| 本文以盈江县新泡山及外围稀土矿找矿工作为例，通过大量硫酸铵浸出-草酸沉淀稀土实验与化验室分析结果对比研究后发现，实验结果与化验分析结果具有十分明显的正相关性。实验首先选取标样共91件验证实验现象和化学分析结果的对应性，并把实验现象分为未见悬浊液、略见悬浊液、悬浊液明显、絮状物明显、絮状物伴少量沉淀、絮状物伴大量沉淀等6种，其对应的化学分析结果多数分别位于＜0.04%、0.04%~0.06%、0.06%~0.08%、0.08%~0.1%、0.1%~0.15%、＞0.15%的区间范围内（准确率90.11%）；然后选取新泡山矿区的钻孔样81件进行应用验证，其中75件与实验结果符合，准确率92.59%；最后将该方法应用到盈江地区的稀土找矿工作中并取得了很好的找矿效果。研究认为，在硫酸铵浸出-草酸沉淀稀土实验中出现悬浊液就能找到稀土矿化体或低品位矿体、出现絮状物和沉淀物即可以找到工业矿，这种方法在野外稀土找矿应用中“面上可圈定矿化范围、垂向可控制钻孔深度”，其结果对下步勘查找矿提供较为可靠的依据，很大程度地缩减了工作周期及勘查成本，值得推广和应用。 |
| 英文摘要: |
| This article took the exploration of the ion-absorbed-type REE deposit in the Xinpaoshan mine, western Yunnan as an example to present a new technique. Comparing the experiments with laboratory analysis data on the ammonium sulfate leaching – oxalic acid precipitating REE shows an obvious positive correlation between them. At first, 91 pieces of standard samples were collected and analyzed to verify the positive correlation between the experimental phenomena and the laboratory analysis data. The experimental phenomena were divided into 6 types: without turbid liquid, with a little turbid liquid, with plenty of turbid liquid, floccule like, floccule like with a little dreg, and floccules with plenty of dreg, corresponding to analysis results: ＜0.04%, 0.04%~0.06%, 0.06%~0.08%, 0.08%~0.1%, 0.1%~0.15% and ＞0.15% with an accuracy 90.11%. Then 81 pieces of samples from the Xinpaoshan REE deposit were collected and analyzed, 75 of which show positive correlation between the experimental phenomena and the REE content (with an accuracy ratio of 92.59%). At last, this method was applied to REE ore exploration work in the Yingjiang area and obtained a good result. Research suggests that mineralized granite can be found when there is turbid liquid in the experiment, and REE ores could be found when there is precipitate in the experiment. Using this method, people can delineate the mineralized zones determine the depth of the drilling holes when necessary, provide a reliable basis for next step of exploration and reduce the work period and survey cost to a large extent. |
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