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
Jockey Cap Hill Garnet locality, Fryeburg, Oxford County, Maine, USA


Locality type:Occurrence
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 Jockey Cap Hill Garnet locality, Fryeburg, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:33623
Long-form Identifier:1:3:33623:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.4km (1.5 miles) ⓘSwan's Falls locality, Fryeburg, Oxford County, Maine, USA
7.5km (4.7 miles) ⓘEast Fryeburg Quartz locality, Fryeburg, Oxford County, Maine, USA
10.6km (6.6 miles) ⓘRedstone "Red Granite" quarry, Redstone, Conway, Carroll County, New Hampshire, USA
10.9km (6.8 miles) ⓘRedstone "Green Granite" quarry, Redstone, Conway, Carroll County, New Hampshire, USA
15.0km (9.3 miles) ⓘLovejoy Gravel pits, Conway, Carroll County, New Hampshire, USA
16.1km (10.0 miles) ⓘGovernment pit, Albany, Carroll County, New Hampshire, USA
20.3km (12.6 miles) ⓘNorth Moat Mountain localities, Bartlett, Carroll County, New Hampshire, USA
21.2km (13.2 miles) ⓘJackson tin mines, Jackson, Carroll County, New Hampshire, USA
21.7km (13.5 miles) ⓘPine Hill Chrysoberyl locality, Lovell, Oxford County, Maine, USA
22.1km (13.7 miles) ⓘOrman McAllister Quarry, Lovell, Oxford County, Maine, USA
References
 
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