Vote for your favorite mineral in #MinCup26! - Bournonite vs. Vesuvianite
Cogwheels of bournonite are up against colourful vesuvianite.
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Biotite from
Henderson Mine, Dailey Mining District (Jones Pass Mining District), Clear Creek 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 Henderson Mine, Dailey Mining District (Jones Pass Mining District), Clear Creek County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:389489
Long-form Identifier:1:3:389489:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
10.2km (6.3 miles) ⓘSherman Mountain, Silver Plume, Georgetown District, Clear Creek County, Colorado, USA
18.4km (11.5 miles) ⓘMurry Mine, Lawson Mining District, Clear Creek County, Colorado, USA
21.0km (13.0 miles) ⓘRevenue; Brittle Silver; Delaware (Baltic and Revenue), Peru Creek Area, Argentine Mining District, Summit County, Colorado, USA
21.7km (13.5 miles) ⓘUnnamed pegmatite, Mount Blue Sky (Mount Evans), Clear Creek County, Colorado, USA
21.9km (13.6 miles) ⓘAtlantic Mine, Montezuma Area, Summit County, Colorado, USA
22.9km (14.2 miles) ⓘBell of the West, Lamartine Mining District, Clear Creek County, Colorado, USA
23.6km (14.6 miles) ⓘMartha E. Adit, Jackson Mining District (Corral Mining District), Clear Creek County, Colorado, USA
24.3km (15.1 miles) ⓘDevils Canyon, Clear Creek County, Colorado, USA
27.3km (16.9 miles) ⓘHudson Tunnel, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
27.3km (16.9 miles) ⓘWaterloo Mine, Russell Gulch, Gilpin County, Colorado, USA
References
USGS Open-File Report 80-661
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
 
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