Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Biotite from
Bennett Quarry, Buckfield, Oxford County, Maine, USA


Locality type:Quarry
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 Bennett Quarry, Buckfield, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:28684
Long-form Identifier:1:3:28684:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
3.2km (2.0 miles) ⓘRyerson Hill Quarries, Paris, Oxford County, Maine, USA
3.4km (2.1 miles) ⓘWestinghouse Quarry, Buckfield, Oxford County, Maine, USA
4.5km (2.8 miles) ⓘMount Mica Quarry, Paris, Oxford County, Maine, USA
7.9km (4.9 miles) ⓘWhispering Pines Quarry, Paris, Oxford County, Maine, USA
8.2km (5.1 miles) ⓘHooper Ledge Quarry, Paris, Oxford County, Maine, USA
8.4km (5.2 miles) ⓘLittle Singepole Mountain prospects, Paris, Oxford County, Maine, USA
8.8km (5.5 miles) ⓘHibbs Quarry, Mount Rubellite, Hebron, Oxford County, Maine, USA
12.3km (7.7 miles) ⓘA.C. Perham Quarry, West Paris, Oxford County, Maine, USA
14.4km (9.0 miles) ⓘRagged Ass Jack Mountain locality (Ragged Jack Mountain locality), Hartford, Oxford County, Maine, USA
15.4km (9.6 miles) ⓘOhtonen Quarry, Greenwood, Oxford County, Maine, USA
References
King, Vandall T. (2000) Mineralogy of Maine Vol. 2 - Mining History, Gems, and Geology. Maine Geological Survey.
 
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