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Barroso-Alvão pegmatite field, Vila Real District, Portugal

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Numerous highly evolved aplite-pegmatite bodies, with spodumene or petalite as a dominant Li-mineral, discordantly cut meta-sediments.
Barren pegmatitic veins, pegmatitic veins with beryl, pegmatitic veins with cassiterite and pegmatitic veins with lithium minerals: spodumene, petalite and lepidolite.

Also extends into Braga District.

Mineral List

Mineral list contains entries from the region specified including sub-localities

56 entries listed. 33 valid minerals.

Localities in this Region

Portugal

Vila Real District
- Barroso-Alvão pegmatite field
  - Lousas aplite-pegmatite

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References

Can. Mineral. 30 (1992), 639-651.

Can. Mineral. 39 (2001), 729-746.

ALEXANDRE LIMA & ENCARNACIÓN RODA ROBLES ed (2007) GRANITIC PEGMATITES: THE STATE OF THE ART - FIELD TRIP GUIDEBOOK. MEMÓRIAS N. º 9, UNIV. DO PORTO, FACULDADE DE CIÊNCIAS, DEPARTAMENTO DE GEOLOGIA

Novák, M. et al. (2009): Ferronigerite with dominant substitution TiSn-1 in muscovite+chlorite aggregate from massive quartz nodule associated with a petalite-rich aplite-pegmatite of the Barroso-Alvão pegmatite field, Northern Portugal. N. Jb. Mineral. Abh. 186, 67-78.

Martins, T., Lima, A., Simmons, W.B. Falster, A.U. & Noronha, F. (2011): Geochemical fractionation of Nb-Ta oxides in Li-bearing pegmatites from the Barroso-Alvão pegmatite field, Northern Portugal. Canadian Mineralogist. 49, 777-791

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Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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