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Biotite from
Crockley pegmatite, Humboldt Township, Marquette County, Michigan, USA


Locality type:Pegmatite
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
Associated Minerals Based on Photo Data:
Allanite-(Ce)1
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Crockley pegmatite, Humboldt Township, Marquette County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:403118
Long-form Identifier:1:3:403118:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.7km (1.7 miles) ⓘM-95 roadcut, Humboldt, Humboldt Township, Marquette County, Michigan, USA
3.0km (1.9 miles) ⓘGrizzly pegmatite, Humboldt Township, Marquette County, Michigan, USA
3.6km (2.2 miles) ⓘUnnamed outcrop, Humboldt Township, Marquette County, Michigan, USA
3.7km (2.3 miles) ⓘHumboldt Mine (Edwards Mine), Humboldt Township, Marquette County, Michigan, USA
4.1km (2.5 miles) ⓘNew Humboldt Mine, Humboldt Township, Marquette County, Michigan, USA
5.9km (3.7 miles) ⓘUnnamed pegmatite (2), M-95 roadcut, Humboldt Township, Marquette County, Michigan, USA
7.5km (4.6 miles) ⓘRepublic, Republic Township, Marquette County, Michigan, USA
7.9km (4.9 miles) ⓘRepublic Mine, Republic, Republic Township, Marquette County, Michigan, USA
9.1km (5.6 miles) ⓘChampion Mine, Champion, Champion Township, Marquette County, Michigan, USA
13.1km (8.1 miles) ⓘDolfin pegmatite, Republic, Republic 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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