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Sri Lanka | refs here |
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| Müller, H. D. & Jahn, S. (2006): Kolonne bei Embilipitiya auf Sri Lanka-eine interessante Fundstelle für Olivin, Hornblende und Spinelle. Mineralien Welt 17 (4): 44-51. |
| Dissanayake, C. B., Chandrajith, R. O. H. A. N. A., & Tobschall, H. J. (2000). The geology, mineralogy and rare element geochemistry of the gem deposits of Sri Lanka. BULLETIN-GEOLOGICAL SOCIETY OF FINLAND, 72(1/2), 5-20. |
| Ceylon Aluvial Mine, (Book, Co. 2002) |
| Dissanayake, C. B., Chandrajith, R. O. H. A. N. A., & Tobschall, H. J. (2000). The geology, mineralogy and rare element geochemistry of the gem deposits of Sri Lanka. BULLETIN-GEOLOGICAL SOCIETY OF FINLAND, 72(1/2), 5-20. |
Gem gravels, Ratnapura, Ratnapura District, Sabaragamuwa Province, Sri Lanka