A tin mine, abandoned around 1960. Owned by Geomine (Belgium). Located near Barco.
Multistage rare-element, volatile-rich microgranite, representing the subvolcanic expression of a high-Na/Li/P/F/REE peraluminous pegmatitic magma. The microgranite is the mixture of two components: a crystal "mush" (quartz, albite, phengite) injected from below through feeder dykes and an overprinting highly evolved component (Li, F, P, Be, Sn, Nb-rich), analog to a rare-element pegmatititic magmatitic component, acting as a lubricant for the ascending "mush".
References
- Mining Annual Review (1985), 488.
- Charoy, B., and Noronha, F. (1991): The Argemela granite-porphyry (Central Portugal): the subvolcanic expression of a high-fluorine, rare-element pegmatite magma. In: Pagel, M., and Leroy, J.L. (eds.): Source, Transport and Deposition of Metals. Proceedings of the 25 years SGA Anniversary Meeting, Nancy, August 30 - September 3, 1991, A.A. Balkema (Rotterdam), 741-744.
- Charoy, B., and Noronha, F. (1996): Journal of Petrology 37(1), 73-94.
- Pereira, E.G., Antunes, I.M., and Monteiro, M.C.H.M. (2010): Environmental geochemistry of Argemela Mine area (Barco, Central Portugal). Goldschmidt Conference Abstracts 2010.
Mineral List
16 entries listed. 11 valid minerals.
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