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
Gold Sovereign Mine (Jackson Shaft), Cripple Creek Mining District, Teller County, Colorado, USA


Locality type:Mine
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 Gold Sovereign Mine (Jackson Shaft), Cripple Creek Mining District, Teller County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:1433611
Long-form Identifier:1:3:1433611:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.9km (1.8 miles) ⓘOphelia Tunnel (Gold Exploration; Moffat Tunnel), Cripple Creek Mining District, Teller County, Colorado, USA
15.1km (9.4 miles) ⓘPikes Peak, El Paso County, Colorado, USA
17.1km (10.6 miles) ⓘMount Rosa, El Paso County, Colorado, USA
19.7km (12.2 miles) ⓘStove Mountain (Cookstove Mountain), El Paso County, Colorado, USA
19.9km (12.4 miles) ⓘCameron Cone, Crystal Park, El Paso County, Colorado, USA
21.2km (13.2 miles) ⓘSentinel rock (Specimen rock), Pikes Peak, El Paso County, Colorado, USA
21.3km (13.2 miles) ⓘSpecimen Rock, El Paso County, Colorado, USA
21.6km (13.4 miles) ⓘCrystal Park area, Crystal Park, El Paso County, Colorado, USA
23.7km (14.7 miles) ⓘJohnny Feldspar Mine, El Paso Mining District, El Paso County, Colorado, USA
24.1km (15.0 miles) ⓘBlack Cloud Mine, Teller County, Colorado, USA
References
Lindgren, Waldemar, Ransome, Frederick Leslie (1906) Geology and gold deposits of the Cripple Creek district, Colorado. Professional Paper 54. US Geological Survey doi:10.3133/pp54 pp.367-369
 
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