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| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Chemistry of the Ta-Nb-Sn-W oxide minerals from the Yichun rare metal granite (SE China): genetic implications and comparison with Moroccan and French Hercynian examples | ||
| Journal | Mineralogical Magazine | ||
| Authors | Belkasmi, M. | Author | |
| Cuney, M. | Author | ||
| Pollard, P. J. | Author | ||
| Bastoul, A. | Author | ||
| Year | 2000 (June) | Volume | 64 |
| Issue | 3 | ||
| Publisher | Mineralogical Society | ||
| DOI | doi:10.1180/002646100549391Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 243172 | Long-form Identifier | mindat:1:5:243172:1 |
| GUID | 0 | ||
| Full Reference | Belkasmi, M., Cuney, M., Pollard, P. J., Bastoul, A. (2000) Chemistry of the Ta-Nb-Sn-W oxide minerals from the Yichun rare metal granite (SE China): genetic implications and comparison with Moroccan and French Hercynian examples. Mineralogical Magazine, 64 (3) 507-523 doi:10.1180/002646100549391 | ||
| Plain Text | Belkasmi, M., Cuney, M., Pollard, P. J., Bastoul, A. (2000) Chemistry of the Ta-Nb-Sn-W oxide minerals from the Yichun rare metal granite (SE China): genetic implications and comparison with Moroccan and French Hercynian examples. Mineralogical Magazine, 64 (3) 507-523 doi:10.1180/002646100549391 | ||
| Abstract/Notes | AbstractIn the Yichun granite complex (SE China), columbite group minerals, microlite and cassiterite are the main Nb, Ta, Sn-bearing minerals. They are mainly concentrated in the uppermost albite-lepidolite granite. Rutile is the only Nb, Ta-bearing phase in the geochemically primitive muscovite-zinnwaldite granite. The chemical evolution of the columbite group minerals (the most abundant and commonly zoned Nb, Ta-bearing minerals) indicates a complex crystallization history of the host granites with: (1) fractional crystallization at depth, reflected by a strong increase of Mn/(Mn+Fe) ratios with a moderate increase of Ta/(Ta+Nb) ratios from the muscovite-zinnwaldite granite to the Li-mica granite and then the most fractionated topaz-lepidolite granite; and (2) emplacement of successive magma batches corresponding to the different units of the granite complex with progressive crystallization of each unit, mainly reflected by a strong increase of Ta/(Ta+Nb) ratios with moderate variation of Mn/(Mn+Fe) ratios during the growth of the zoned crystals. The data are compared with those from the RMG of Ezzirari (Morocco), Montebras, Beauvoir and Chèdeville (France). | ||
| Locality | Mineral(s) |
|---|---|
| Xinfang Mine, Yichun complex (Yashan batholith), Yuanzhou District, Yichun, Jiangxi, China | ⓘ Muscovite, ⓘ Quartz, ⓘ Rutile, ⓘ Wolframite Group, ⓘ Zinnwaldite |
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