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Biotite from
Back Forty Deposit, Menominee County, Michigan, USA


Locality type:Deposit
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 Back Forty Deposit, Menominee County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:690288
Long-form Identifier:1:3:690288:9
GUID (UUID V4):0
Nearest other occurrences of Biotite
23.1km (14.4 miles) ⓘMt. Tom Quarry (Middle Inlet quarry), Middle Inlet, Marinette County, Wisconsin, USA
38.6km (24.0 miles) ⓘPayant-Chrissman prospect (Florence County prospect), Aurora, Florence County, Wisconsin, USA
39.8km (24.7 miles) ⓘFluorite railroad cut, Niagara, Marinette County, Wisconsin, USA
50.9km (31.6 miles) ⓘBadwater greenstone, Dickinson County, Michigan, USA
59.7km (37.1 miles) ⓘRian Quarry, Felch, Dickinson County, Michigan, USA
63.5km (39.5 miles) ⓘUnnamed Pegmatite quarry ("Groveland" pegmatite), Randville, Dickinson County, Michigan, USA
66.7km (41.4 miles) ⓘPeavey dam, Mastodon Township, Iron County, Michigan, USA
80.4km (50.0 miles) ⓘWest Kiernan sill, Mansfield Township, Iron County, Michigan, USA
92.5km (57.5 miles) ⓘRogers Mine, Bates Township, Iron County, Michigan, USA
References
Quigley, Tom, and Mahin, Bob, 2008, Back Forty Geology and Mineralization: Proceedings of the Institute on Lake Superior Geology, v. 54, Part 2 - Field Trip Guidebook, 66-85.
 
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