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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Biotite from
Santa Ana, Alcañices, Zamora, Castile and Leon, Spain


Locality type:Village
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Santa Ana, Alcañices, Zamora, Castile and Leon, Spain
Data Identifiers
Mindat Occurrence Record ID:610918
Long-form Identifier:1:3:610918:9
GUID (UUID V4):0
Nearest other occurrences of Biotite
4.8km (3.0 miles) ⓘSan Mamed, Rábano de Aliste, Zamora, Castile and Leon, Spain
6.6km (4.1 miles) ⓘVillarino trás la Sierra, Trabazos, Zamora, Castile and Leon, Spain
9.4km (5.8 miles) ⓘLatedo, Trabazos, Zamora, Castile and Leon, Spain
27.9km (17.4 miles) ⓘBermillo de Alba, Fonfría, Zamora, Castile and Leon, Spain
32.4km (20.2 miles) ⓘCerezal de Aliste, Muelas del Pan, Zamora, Castile and Leon, Spain
37.1km (23.0 miles) ⓘVillaflor, Muelas del Pan, Zamora, Castile and Leon, Spain
47.3km (29.4 miles) ⓘMurçós Mines, Murçós, Macedo de Cavaleiros, Bragança, Portugal
54.7km (34.0 miles) ⓘMacedo de Cavaleiros Volcanic area, Bornes, Macedo de Cavaleiros, Bragança, Portugal
56.3km (35.0 miles) ⓘErvedosa Mine (Tuela Mine), Ervedosa, Vinhais, Bragança, Portugal
62.6km (38.9 miles) ⓘTrigueiriça Mines, Rebordelo, Vinhais, Bragança, Portugal
References
Fernández, A., Moro, M. C. (1998) Origin and depositional environment of Ordovician stratiform iron mineralization from Zamora (NW Iberian Peninsula) Mineralium Deposita, 33 (6) 606-619 doi:10.1007/s001260050176
 
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