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Biotite from
Handcart Gulch, Hall Valley (Hall's Valley), Montezuma Mining District, Park Co., Colorado, USA

Locality type:Gulch
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
References
References:Bove, D.J., Caine, J.S., and Lowers, H.A., 2012, Geologic and mineralogic controls on acid and metal-rich rock drainage in an alpine watershed, Handcart Gulch, Colorado: U.S. Geological Survey Scientific Investigations Report 2012–5067, 121 p.
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Handcart Gulch, Hall Valley (Hall's Valley), Montezuma Mining District, Park Co., Colorado, USA
Nearest other occurrences of Biotite
10.5km (6.5 miles) Revenue; Brittle Silver; Delaware (Baltic and Revenue), Peru Creek Area, Argentine Mining District, Summit Co., Colorado, USA
26.3km (16.3 miles) Sherman Mountain, Silver Plume, Georgetown District, Clear Creek Co., Colorado, USA
31.4km (19.5 miles) Henderson Mine, Dailey Mining District (Jones Pass Mining District), Clear Creek Co., Colorado, USA
31.9km (19.8 miles) Copper King Prospect, Horseshoe Basin Mining District, Park Co., Colorado, USA
32.3km (20.1 miles) Devils Canyon, Clear Creek Co., Colorado, USA
32.9km (20.4 miles) Sweet Home Mine (Home Sweet Home Mine; Sweet Home lode and Pulaski lode [Patents 106 and 107]), Mount Bross, Alma Mining District, Park Co., Colorado, USA
33.4km (20.7 miles) Bell of the West (Martha E; Billie; Ariadne; Little Topsy; Bruce; Alabama; Yankee Girl; Mammoth; Le Roi; Black; Emily; Crazy Girl; Baby Eddy), Lamartine Mining District, Clear Creek Co., Colorado, USA
33.7km (20.9 miles) Martha E. Adit, Jackson Mining District (Corral Mining District), Clear Creek Co., Colorado, USA
33.9km (21.1 miles) Climax Mine (Climax Open Pit Mine), Climax, Climax Mining District, Lake Co., Colorado, USA
34.0km (21.1 miles) Murry Mine, Lawson Mining District (Dumont Mining District; Montana Mining District), Clear Creek Co., Colorado, USA
 
Mineral and/or Locality  
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