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Biotite from
Middle Island, Picnic Islands, Marquette, Marquette County, Michigan, USA


Locality type:Island
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 Middle Island, Picnic Islands, Marquette, Marquette County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:405127
Long-form Identifier:1:3:405127:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
1.9km (1.2 miles) ⓘUnnamed pegmatite, Marquette, Marquette County, Michigan, USA
20.6km (12.8 miles) ⓘEmpire Mine, Palmer, Richmond Township, Marquette County, Michigan, USA
26.9km (16.7 miles) ⓘGreens Creek pegmatite, Richmond Township, Marquette County, Michigan, USA
40.6km (25.2 miles) ⓘHumboldt Mine (Edwards Mine), Humboldt Township, Marquette County, Michigan, USA
40.8km (25.4 miles) ⓘNew Humboldt Mine, Humboldt Township, Marquette County, Michigan, USA
41.0km (25.5 miles) ⓘUnnamed outcrop, Humboldt Township, Marquette County, Michigan, USA
41.8km (26.0 miles) ⓘCrockley pegmatite, Humboldt Township, Marquette County, Michigan, USA
43.4km (26.9 miles) ⓘEast Eagle Mine, Michigamme Township, Marquette County, Michigan, USA
43.8km (27.2 miles) ⓘM-95 roadcut, Humboldt, Humboldt Township, Marquette County, Michigan, USA
44.5km (27.6 miles) ⓘGrizzly pegmatite, Humboldt Township, Marquette County, Michigan, USA
References
Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
 
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