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
Bottiglia Pass (Königsjoch), Cedec Valley, Valfurva, Sondrio Province, Lombardy, Italy


Locality type:Pass
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 Bottiglia Pass (Königsjoch), Cedec Valley, Valfurva, Sondrio Province, Lombardy, Italy
Data Identifiers
Mindat Occurrence Record ID:903428
Long-form Identifier:1:3:903428:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.9km (0.6 miles) ⓘGran Zebrù Glacier (Vedretta del Gran Zebrù), Cedec Valley, Valfurva, Sondrio Province, Lombardy, Italy
1.0km (0.6 miles) ⓘVedretta di Solda (Suldenferner), Stilfs (Stelvio), Vinschgau (Val Venosta), South Tyrol, Trentino-Alto Adige/Südtirol, Italy
1.5km (1.0 miles) ⓘOrtles-Gran Zebrù northeast slope (Ortler-Königspitze northeast slope), Stilfs (Stelvio), Vinschgau (Val Venosta), South Tyrol, Trentino-Alto Adige/Südtirol, Italy
8.3km (5.2 miles) ⓘPeder Valley, Martell (Martello), Vinschgau (Val Venosta), South Tyrol, Trentino-Alto Adige/Südtirol, Italy
11.8km (7.3 miles) ⓘDosegù Glacier, Gavia Valley, Valfurva, Sondrio Province, Lombardy, Italy
16.0km (9.9 miles) ⓘGavia Pass, Gavia Valley, Valfurva, Sondrio Province, Lombardy, Italy
37.5km (23.3 miles) ⓘMürasciola, Camp Valley, Poschiavo, Bernina Region, Grisons, Switzerland
44.7km (27.8 miles) ⓘForcel Rosso Gully (Forcel Rosso Pass), Monte Foppa (north slope), Upper Val Saviore, Cevo, Brescia Province, Lombardy, Italy
46.1km (28.6 miles) ⓘQuadrada (incl. Quadradin), Selva, Poschiavo, Bernina Region, Grisons, Switzerland
48.3km (30.0 miles) ⓘLavin, Zernez, Engiadina Bassa/Val Müstair Region, Grisons, Switzerland
References
Bedognè, F., Montrasio, A., Sciesa, E. (2006): I minerali della medio-alta Valtellina delle Orobie e della Val Poschiavo. Aggiornamenti sulle altre località della provincia di Sondrio. Tipografia Bettini, Sondrio, 255 pp.
 
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