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Biotite from
Dutch Flat Gulch, Gold Brick Mining District, Gunnison County, Colorado, USA


Locality type:Gulch
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 Dutch Flat Gulch, Gold Brick Mining District, Gunnison County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:429326
Long-form Identifier:1:3:429326:2
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.4km (1.5 miles) ⓘBoulder Creek, Gold Brick Mining District, Gunnison County, Colorado, USA
6.3km (3.9 miles) ⓘBucky pegmatite (New Anniversary; Willow Creek), Quartz Creek Pegmatite Mining District, Gunnison County, Colorado, USA
9.8km (6.1 miles) ⓘBlack Wonder Occurrence, Quartz Creek Pegmatite Mining District, Gunnison County, Colorado, USA
10.0km (6.2 miles) ⓘBrown Derby Mine, Quartz Creek Pegmatite Mining District, Gunnison County, Colorado, USA
10.0km (6.2 miles) ⓘBrown Derby No. 1, Brown Derby Mine, Quartz Creek Pegmatite Mining District, Gunnison County, Colorado, USA
10.9km (6.8 miles) ⓘBon Ton Mine, Monarch Mining District, Chaffee County, Colorado, USA
26.9km (16.7 miles) ⓘCalifornia Mine, Upper Browns Creek area, Nathrop, Chaffee County, Colorado, USA
30.0km (18.7 miles) ⓘMount White, Chaffee County, Colorado, USA
31.7km (19.7 miles) ⓘGreen Mountain Mining District (Gold Basin Mining District; Iris Mining District), Gunnison County, Colorado, USA
32.0km (19.9 miles) ⓘLucky Strike Mine (Modoc; MS 17455; Horse Shoe; MS 17122; Belle Valaisane; MS 13897; Only Chance; MS 17455; Mammoth; MS 13897; Patented Claims: Lucky Strike; MS 9125), Green Mountain Mining District (Gold Basin Mining District; Iris Mining District), Gunnison 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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