Vote for your favorite mineral in #MinCup26! - Monazite-(Ce) vs. Andalusite
It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Biotite from
Potato Peak, San Juan County, Colorado, USA


Locality type:Hill
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 Potato Peak, San Juan County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:1272568
Long-form Identifier:1:3:1272568:9
GUID (UUID V4):0
Nearest other occurrences of Biotite
21.7km (13.5 miles) Silver Creek Molybdenum deposit, Silver Creek, Rico Mining District (Pioneer Mining District), Rico Mountains, Dolores County, Colorado, USA
21.9km (13.6 miles) Bakers Bridge, Durango Area, La Plata County, Colorado, USA
23.7km (14.7 miles) Badger Mine (Badger tunnel; Getrude), Ophir Mining District (Iron Springs Mining District), San Miguel County, Colorado, USA
39.1km (24.3 miles) Copper Hill Mine, La Plata, La Plata Mining District (California Mining District), La Plata County, Colorado, USA
49.9km (31.0 miles) Pride of America Mine, Galena Mining District (Henson Creek Mining District), Hinsdale County, Colorado, USA
77.1km (47.9 miles) Creede Formation, Creede Mining District, Mineral County, Colorado, USA
88.8km (55.2 miles) Thorium Prospects (MRDS - 10014575), White Earth Mining District (Powderhorn Mining District), Gunnison County, Colorado, USA
91.4km (56.8 miles) Iron Hill deposit, White Earth Mining District (Powderhorn Mining District), Gunnison County, Colorado, USA
91.5km (56.9 miles) Thorium Prospects (MRDS - 10087971), White Earth Mining District (Powderhorn Mining District), Gunnison County, Colorado, USA
91.9km (57.1 miles) Black Canyon Beryl Prospect, Curecanti Needle Area, Gunnison County, Colorado, USA
References
 
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