Study on the Occurrence State of Scandium and Rare Earths in Jiuzigou Phosphate Ore, Feng County, Shaanxi Province

WANG Qiang; SONG Gongshe; LIU Kai; WANG Liming

doi:10.13779/j.cnki.issn1001-0076.2022.01.020

2022 Vol. 42, No. 1

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Article navigation > Conservation and Utilization of Mineral Resources > 2022 > 42(1): 138-143

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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

Citation:

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

Study on the Occurrence State of Scandium and Rare Earths in Jiuzigou Phosphate Ore, Feng County, Shaanxi Province

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

Received Date: 12 October 2021

Publish Date: 25 February 2022

Abstract

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.
- Jiuzigou phosphate mine /
- scandium /
- rare earth /
- occurrence characteristics

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References

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