Nam Xe North (Mau Xe North) (Record #343) rare-earth element deposit in Lai Chau, Vietnam

Nam Xe North (Mau Xe North)

Metamorphic rare earth element deposit in Lai Chau, Vietnam

Geographic location

Country	Vietnam
State or province	Lai Chau
Geographic location:	103.5, 22.483333
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Location references

Estimation

Geologic characteristics

Deposit type	Metamorphic
Age of deposit	Middle Carboniferous - Permian
REE minerals	bastnäsite parisite
Ore minerals	barite fluorite magnetite uranium pyrochlore thorium pyrite galena apatite strontium
Host rock types	limestone marble schist

Nearby scientific information

Geologic map unit	103.5, 22.483333333333
Other databases	Find additional scientific data near this location

Economic information

Status	Prospect
Company	Vietnamese Gov't
Resource estimates	Possible reserves-- 7 Mt REO Proven + probable--7.8 Mt REO Proven-- 1.745 Mt REO

References for resource estimates

Dzien, D.V., 1990, Rare earth deposits, in Geology and mineral resources of Vietnam: Vietnam General Department of Mines and Geology, v. 1, p. 144-147.

Comments

Metasomatic + weathered ore. On N side of Nam Xe River in Phong Tho district. Lenses, veins, disseminated ore in crushed zones of lst affected by metasomatism. Weathered ore contains 4-5% REO to depth of 20 m. Primary ore contains an average of 1.4% REO.

Bibliographic references

Dzien, D.V., 1990, Rare earth deposits, in Geology and mineral resources of Vietnam: Vietnam General Department of Mines and Geology, v. 1, p. 144-147.
Economic and Social Commission for Asia and the Pacific, 1990, Viet Nam: New York, United Nations, Atlas of Mineral Resources of the ESCAP Region, v. 6, 124 p.
Hedrick, J.B., 1997, Rare earths: U.S. Geological Survey Minerals Yearbook 1996.
O'Driscoll, Mike, 1996, Minerals of VietnamSands future black and white: Industrial Minerals, no. 350, p. 73-93.
Premoli, Camillo, 1990, Industrial minerals of Vietnam: Industrial Minerals, no. 274, p. 58-71.
Juskowiak, O. Kanasiewicz, J., Stepniewski, M., and Sylwestrzak, H., 1986, Carbonatites with RE-minerals from Nam Xe region (SRV): Archiwum Mineralogiczne Warszawa 40, no.2 (1986) p. 23-41.