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Biotite from
Little Anna, Devils Head Pegmatite Mining District, Douglas 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 Little Anna, Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:374068
Long-form Identifier:1:3:374068:2
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.3km (1.4 miles) ⓘRusty Pick Occurrence, Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
3.5km (2.2 miles) ⓘDenver Mine, Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
5.8km (3.6 miles) ⓘDevils Head Occurrence (C.M.S.), Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
7.2km (4.5 miles) ⓘFern Creek, Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
7.3km (4.5 miles) ⓘLost Dutchman pegmatite, Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
7.3km (4.5 miles) ⓘSpielman prospect (Spielman pegmatite), Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
7.4km (4.6 miles) ⓘCramer Mine (Magnuson Quarry), Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
7.6km (4.7 miles) ⓘCramer No. 2 Quarry (Snowdrift Quarry), Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
9.3km (5.8 miles) ⓘThree Musketeers Mine, Devils Head Pegmatite Mining District, Douglas County, Colorado, USA
18.9km (11.7 miles) ⓘSnowflake Feldspar Mine, Teller County, Colorado, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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