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
Panco Manganese Deposit, Snowmass Area, Pitkin County, Colorado, USA


Locality type:Deposit
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 Panco Manganese Deposit, Snowmass Area, Pitkin County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:997082
Long-form Identifier:1:3:997082:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
33.6km (20.9 miles) ⓘWest Maroon Pass Area, Pitkin County, Colorado, USA
36.3km (22.6 miles) ⓘCrystal Lode pegmatite, Fulford Mining District, Eagle County, Colorado, USA
44.3km (27.5 miles) ⓘComet group (Comet prospect), Gunnison County, Colorado, USA
44.6km (27.7 miles) ⓘIndependence (Independence Pass), Columbia Mining District (Ashcroft Mining District), Pitkin County, Colorado, USA
48.0km (29.8 miles) ⓘItalian Mountain, Taylor Park, Dorchester Mining District, Gunnison County, Colorado, USA
51.6km (32.0 miles) ⓘStandard Mine, Ruby Mining District (Elk Mountain Mining District; Irwin Mining District), Gunnison County, Colorado, USA
51.8km (32.2 miles) ⓘTurquoise Lake Occurrence, St. Kevin - Independence, Lake County, Colorado, USA
52.1km (32.3 miles) ⓘMt. Emmons/Crested Butte (Chautauqua; Daisey; Daisey Mine; Mt. Emmons; Crested Butte), Elk Mountain Mining District (Snowmass Mountain Mining District), Gunnison County, Colorado, USA
67.4km (41.9 miles) ⓘChalk Mountain Occurrence, Alicante, Lake County, Colorado, USA
70.2km (43.6 miles) ⓘClimax Mine, Climax, Climax Mining District, Lake County, Colorado, USA
References
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
 
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