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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Biotite from
Selle Lake area, San Giovanni di Fassa, Trento Province, Trentino-Alto Adige/Südtirol, Italy


Locality type:Mountain Area
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 Selle Lake area, San Giovanni di Fassa, Trento Province, Trentino-Alto Adige/Südtirol, Italy
Data Identifiers
Mindat Occurrence Record ID:1507450
Long-form Identifier:1:3:1507450:4
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.9km (0.6 miles) ⓘToal della Ricoletta (Toal della Fassaite), San Giovanni di Fassa, Trento Province, Trentino-Alto Adige/Südtirol, Italy
3.0km (1.9 miles) ⓘPale Rabbiose, Moena, Trento Province, Trentino-Alto Adige/Südtirol, Italy
9.5km (5.9 miles) ⓘCosta di Viezzena, Predazzo, Trento Province, Trentino-Alto Adige/Südtirol, Italy
27.8km (17.2 miles) ⓘSagrón Mine, Sagron Mis, Trento Province, Trentino-Alto Adige/Südtirol, Italy
27.8km (17.3 miles) ⓘVallalta Mine, Gosaldo, Belluno Province, Veneto, Italy
49.1km (30.5 miles) ⓘCorvara Mine (Rabenstein Mine), Pénnes Valley (Pensertal), Sarentino Valley (Sarn valley), South Tyrol, Trentino-Alto Adige/Südtirol, Italy
49.8km (31.0 miles) ⓘLe Cave (Grasstein), Franzensfeste (Fortezza), Wipptal (Alta Vall'Isarco), South Tyrol, Trentino-Alto Adige/Südtirol, Italy
50.9km (31.7 miles) ⓘQuadrate, Fornace, Trento Province, Trentino-Alto Adige/Südtirol, Italy
61.2km (38.0 miles) ⓘSettolo Basso, Bigolino, Valdobbiadene, Treviso Province, Veneto, Italy
65.7km (40.8 miles) ⓘRio dei Ronchi (Runggenbach; Telfer Weißen), South Tyrol, Trentino-Alto Adige/Südtirol, Italy
References
Minguzzi, V., Morandi, N., Nannetti, M.C., and Pirani, R. (1979) Associazioni di silicati di Ca in un'aureola di contatto del Lago delle Selle (M.ti Monzoni).
 
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