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Namibia | |
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| von Seckendorff, V., Drüppel, K., Okrusch, M., Cook, N.J., and Littmann, S. (2000): Mineralium Deposita 35, 430-450. |
| von Seckendorff, V., Drüppel, K., Okrusch, M., Cook, N.J., and Littmann, S. (2000): Mineralium Deposita 35, 430-450. |
| Bodeving, S. (2015): Petrogenesis of the Lofdal Intrusive Suite: Implications for rare earth elements mineralization. Unpublished M.Sc. thesis, McGill University, Montreal, Quebec, Canada. 202 p. |