A discovery of extremely-enriched boehmite from coal in the Junger Coalfield, the northeastern Ordos Basin
Acta Geologica Sinica
By: S. Dai, D. Ren, S. Li, and C. Chou
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Abstract
The authors found an extremely-enriched boehmite and its associated minerals for the first time in the super-thick No. 6 coal seam from the Junger Coalfield in the northeastern Ordos Basin by using technologies including the X-ray diffraction analysis (XRD), scanning electron microscope equipped with an energy dispersive X-ray spectrometer, and optical microscope. The content of boehmite is as high as 13.1%, and the associated minerals are goyazite, zircon, rutile, goethite, galena, clausthalite, and selenio-galena. The heavy minerals assemblage is similar to that in the bauxite of the Benxi Formation from North China. The high boehmite in coal is mainly from weathering crust bauxite of the Benxi Formation from the northeastern coal-accumulation basin. The gibbsite colloidstone solution was removed from bauxite to the peat mire, and boehmite was formed via compaction and dehydration of gibbsite colloidstone solution in the period of peat accumulation and early period of diagenesis.
Suggested Citation
Dai, S., Ren, D., Li, S., and Chou, C., 2006, A discovery of extremely-enriched boehmite from coal in the Junger Coalfield, the northeastern Ordos Basin: Acta Geologica Sinica, v. 80, no. 2, p. 294-300.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A discovery of extremely-enriched boehmite from coal in the Junger Coalfield, the northeastern Ordos Basin |
| Series title | Acta Geologica Sinica |
| Volume | 80 |
| Issue | 2 |
| Year Published | 2006 |
| Language | Chinese |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Acta Geologica Sinica |
| First page | 294 |
| Last page | 300 |