Vote for your favorite mineral in #MinCup26! - Bournonite vs. Vesuvianite
Cogwheels of bournonite are up against colourful vesuvianite.
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Biotite from
Groundhog Bar Placer (Fall Creek Bar Placer), Salmon River Mining District, Idaho County, Idaho, USA


Locality type:Placer
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 Groundhog Bar Placer (Fall Creek Bar Placer), Salmon River Mining District, Idaho County, Idaho, USA
Data Identifiers
Mindat Occurrence Record ID:447546
Long-form Identifier:1:3:447546:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
1.6km (1.0 miles) Moore Bar (Slide Creek Placer Claim), Salmon River Breaks Primitive Area, Idaho County, Idaho, USA
3.1km (1.9 miles) Gaines Bar (Rhett Creek Placer; Billie Placer), Dixie Mining District, Idaho County, Idaho, USA
6.9km (4.3 miles) Gold Dust Sonny Placer, Salmon River Breaks Primitive Area, Idaho County, Idaho, USA
8.1km (5.0 miles) Boise Bar, Dixie Mining District, Idaho County, Idaho, USA
8.8km (5.5 miles) Big Mallard Bar, Salmon River Breaks, Salmon River Breaks Primitive Area, Idaho County, Idaho, USA
9.1km (5.6 miles) Dixie Comstock Mine, Dixie Mining District, Idaho County, Idaho, USA
10.5km (6.5 miles) Yellow Pine Bar, Salmon River Breaks Primitive Area, Idaho County, Idaho, USA
10.7km (6.7 miles) Painter Bar, Dixie Mining District, Idaho County, Idaho, USA
13.9km (8.6 miles) Allison Ranch Placer, Salmon River Breaks, Salmon River Breaks Primitive Area, Idaho County, Idaho, USA
16.1km (10.0 miles) Bargamin Bar Prospect, Salmon River Breaks, Salmon River Breaks Primitive Area, Idaho County, Idaho, USA
References
 
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