Developing Vietnam's mineral sands for the rare earths market Industrial Minerals; London (Sep 22, 2014).
- Autores: Industrial Minerals
- Localización: Industrial Minerals, ISSN 0019-8544, Nº. 565, 2014 (Ejemplar dedicado a: Octubre)
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
Rare earth phosphates (monazite and xenotime) have been noted as a valuable byproduct of ilmenite and zircon mineral sands in coastal Vietnam, particularly in the Thuan An and Cat Khanh areas. The placer deposits with large reserve of monazite are De Gi-Cat Khanh, My Tho, Ke Sung and Quang Ngan. In addition, the deposits of Xuan Thinh-Tuy Phong in Phu Yen province and Cua Dai in Quang Nam province contain reserves of between 1,000 and 4,000 tonnes as well as some occurrences of large content of monazite in Con Dan (15.3kg/square metre) and Nhan Ly (10.9kg/square metre).
The Cua Dai deposit in Hoi An city, Quang Nam province, consists of three bodies. The first, in Lap [Binh Dinh], is 600 metres long with a width of 10-80 metres and a thickness of 1.5 metres. Average ilmenite content of the deposit is between 6-8kg/square metre. The second body is 200 metres long, 50-60 metres wide and 1.4-1.8 metres thick. Ilmenite content in the second body is from 9-11.8kg/square metre. The third measures 100 metres in length, 15-60 metres in width and 1.5 metres in thickness with an ilmenite content of 28-74kg/square metre, averaging 50 kg.
De Gi-Cat Khanh deposit is situated along the coast of Cat Khanh village (Cat Khanh group), stretching over an area of 8km from De Gi port to Chanh Oai village. The deposit has an average width of 1.2-1.4km. Three ore bodies overlie each other, with an average thickness of 3.5 metres, averaging in Ti-mineral content at 72.91kg/square metre (ilmenite at 70.09kg/square metre), zircon 2.48kg/square metre, monazite and xenotime 5.42kg/square metre.
