| 陕西凤县九子沟磷矿中钪、稀土赋存特征研究 |
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| 引用本文： | 王强, 宋公社, 刘凯, 王利民. 陕西凤县九子沟磷矿中钪、稀土赋存特征研究[J]. 矿产保护与利用, 2022, 42(1): 138-143. doi: 10.13779/j.cnki.issn1001-0076.2022.01.020 |
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| 作者姓名： | 王强 宋公社 刘凯 王利民 |
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| 作者单位： | 陕西省地质调查院矿产地质调查中心,陕西 西安710068;陕西地矿物化探队有限公司,陕西 西安710043 |
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| 基金项目： | 陕西省地质勘查基金项目“陕西秦巴地区基性-超基性岩中钪、稀土等矿产富集规律研究”61202009350 |
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| 摘 要： | 陕西凤县九子沟磷矿为一低品位超大型磷灰石矿床，矿石钪含量平均40×10-6，稀土含量0.07%~0.13%，均可回收利用。采用化学多元素分析、MLA分析、电子探针波谱分析及元素面扫描等手段对矿石开展钪、稀土元素赋存特征研究，结果显示：矿石中钪和稀土的主要载体矿物不同，赋存状态也存在差异。矿石中没有独立钪矿物，钪全部以类质同象形式赋存于透辉石、磷灰石和黑云母中，在透辉石中最高，分布率达78.84%，在磷灰石和黑云母中的占21.16%;矿石中稀土大部分以类质同象形式赋存在磷灰石中，分布率达90.56%，其余以独立矿物形式赋存于褐帘石中。在钪、稀土的综合利用中，稀土应从磷灰石精矿中提取回收，而钪则应在以透辉石、黑云母为主的尾矿中提取。
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| 关 键 词： | 九子沟磷矿 钪 稀土 赋存特征 |
| 收稿时间： | 2021-10-12 |
Study on the Occurrence State of Scandium and Rare Earths in Jiuzigou Phosphate Ore,Feng County,Shaanxi Province |
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| WANG Qiang, SONG Gongshe, LIU Kai, WANG Liming. Study on the Occurrence State of Scandium and Rare Earths in Jiuzigou Phosphate Ore, Feng County, Shaanxi Province[J]. Conservation and Utilization of Mineral Resources, 2022, 42(1): 138-143. doi: 10.13779/j.cnki.issn1001-0076.2022.01.020 |
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| Authors: | WANG Qiang SONG Gongshe LIU Kai WANG Liming |
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| Affiliation: | 1.Geological Survey Center of Mineral Resources, Shaanxi Geological Survey Institute, Xi'an 710068, Shaanxi, China;; 2.Shaanxi Geophysical and Geochemical Exploration Team Co., Ltd., Xi'an 710043, Shaanxi, China |
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| Abstract: | The Jiuzigou phosphate deposit in Fengxian County, Shaanxi Province is a low-grade super-large apatite deposit. The average scandium content in the ore is 40×10-6, and the total rare earth content is 0.07%~0. 13%, all of which can be recycled. The occurrence characteristics of scandium and rare earth elements in the ore were studied by means of chemical multi-element analysis, MLA analysis, electron microprobe spectrum analysis and element surface scanning. The results show that the main carrier minerals of scandium and rare earth elements in the ore are different, and the occurrence States are also different. There is no independent scandium mineral in the ore. All scandium exists in the form of isomorphism in diopside, apatite and biotite, with the highest occurrence in diopside, up to 78.84%, and 21.16% in apatite and biotite; Most of the rare earth elements in the ore occur in apatite in the form of isomorphism, with a distribution rate of 90.56%, and the rest occur in allanite in the form of independent minerals. In the comprehensive utilization of scandium and rare earth, rare earths should be extracted and recovered from the apatite concentrate, while scandium should be extracted from tailings mainly composed of diopside and biotite. |
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| Keywords: | Jiuzigou phosphate mine scandium rare earth occurrence characteristics |
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