Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Columbite-(Mn) from
La Canalita Sn-rich pegmatitic dykes, Peñaparda, Salamanca, Castile and Leon, Spain


Locality type:Deposit
Classification
Species:Columbite-(Mn)
Formula:Mn2+Nb2O6
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Columbite-(Mn) data
Locality Data:Click here to view La Canalita Sn-rich pegmatitic dykes, Peñaparda, Salamanca, Castile and Leon, Spain
Data Identifiers
Mindat Occurrence Record ID:1704219
Long-form Identifier:1:3:1704219:2
GUID (UUID V4):0
Nearest other occurrences of Columbite-(Mn)
38.0km (23.6 miles) ⓘBarquilla Sn-Ge-Cd-Cu-Fe Deposit, Villar de la Yegua, Salamanca, Castile and Leon, Spain
39.3km (24.4 miles) ⓘCastillejo de Dos Casas, Aldea del Obispo, Salamanca, Castile and Leon, Spain
48.4km (30.1 miles) ⓘBendada Mines, Bendada, Sabugal, Guarda, Portugal
56.6km (35.2 miles) ⓘAlvarrões Mine, Gonçalo, Guarda, Guarda, Portugal
63.8km (39.6 miles) ⓘSegura Mines (Segura mining field), União das Freguesias de Zebreira e Segura, Idanha-a-Nova, Castelo Branco, Portugal
77.2km (48.0 miles) ⓘFeli deposit, La Fregeneda, Salamanca, Castile and Leon, Spain
References
Llorens, T., Moro, M. C. (2010) MICROLITE AND TANTALITE IN THE LCT GRANITIC PEGMATITES OF LA CANALITA, NAVASFRIAS Sn-W DISTRICT, SALAMANCA, SPAIN. The Canadian Mineralogist, 48 (2) 375-390 doi:10.3749/canmin.48.2.375
Losantos, Emma, Borrajo, Iñigo, Losada, Iván, Boixet, Lluís, Castelo Branco, José M., Tornos, Fernando (2025) Sn and W mineralisation in the Iberian Peninsula. Ore Geology Reviews, 179. 106542 doi:10.1016/j.oregeorev.2025.106542
 
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