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Teso de la Calera pegmatite, Pinilla de Fermoselle, Villar del Buey, Zamora, Castile and Leon, Spain

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Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 41° North , 5° West (est.)
Margin of Error:~95km
Other regions containing this locality:Iberian Peninsula
Köppen climate type:Csb : Warm-summer Mediterranean climate
Name(s) in local language(s):Pegmatita Teso de la Calera, Pinilla de Fermoselle, Villar del Buey, Zamora, Castilla y León, España

A highly fractionated, Li-F-Be-B-P-bearing granite pegmatite in calc-alkaline granite and hornfels.

Appears as a cupola over a PF leucogranite, displaying a non-symmetrical internal zonation with a complete sequence from a barren pegmatitic facies near the granite, to a highly evolved zone in the uppermost part of the body.

Al-rich micas show a continuous evolution from muscovitic to lepidolitic compositions from the leucogranite to the most evolved zone. Fe-rich micas range from Fe-biotite in the leucogranite and in the least evolved pegmatite zones, to an intermediate composition between zinnwaldite and trilithionite in the most evolved pegmatitic facies (Roda-Robles et al., 2006).

The pegmatite belongs to the Arribes del Duero Natural Park, so collecting activities are restricted.

Mineral List

35 valid minerals.

Rock Types Recorded

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Roda, E. et al. (1998). "The Fe-Mn phosphate associations from the Pinilla de Fermoselle pegmatite, Zamora, Spain: occurence of kryzhanovskite and natrodufrénite." European Journal of Mineralogy, 10(1).
Roda, E., Pesquera, A., Gil-Crespo, P. P., Torres-Ruiz, J., & Fontan, F. (2005). Origin and internal evolution of the Li-F-Be-BP-bearing Pinilla de Fermoselle pegmatite (Central Iberian Zone, Zamora, Spain). American Mineralogist, 90(11-12), 1887-1899.
Roda-Robles, E., Pesquera, A., Gil-Crespo, P. P., Torres-Ruiz, J. & De Parseval, P. (2006): Mineralogy and geochemistry of micas from the Pinilla de Fermoselle pegmatite (Zamora, Spain). European Journal of Mineralogy, 18, 369-377.

External Links

- http://www.foro-minerales.com/forum/viewtopic.php?t=8292 (discussion about the occurrences of this area with maps and references, in Spanish language)

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