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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Muscovite from
Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA


Locality type:Outcrop
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:34085
Long-form Identifier:1:3:34085:6
GUID (UUID V4):0
Nearest other occurrences of Muscovite
0.1km (0.1 miles) ⓘMelrose Quarry, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA
3.2km (2.0 miles) ⓘMagna Futura Mine, Stoneham, Oxford County, Maine, USA
3.2km (2.0 miles) ⓘCole Quarry, Stoneham, Oxford County, Maine, USA
3.2km (2.0 miles) ⓘPalmer Mountain locality, Stoneham, Oxford County, Maine, USA
3.4km (2.1 miles) ⓘStyles Mountain locality, Stoneham, Oxford County, Maine, USA
3.9km (2.4 miles) ⓘRattlesnake Mountain locality, Stoneham, Oxford County, Maine, USA
4.0km (2.5 miles) ⓘShirley Brook Topaz locality, Stoneham, Oxford County, Maine, USA
4.8km (3.0 miles) ⓘVirginia Lake prospect, Stoneham, Oxford County, Maine, USA
5.5km (3.4 miles) ⓘLord Hill Quarry (Lord Hill Mine), Stoneham, Oxford County, Maine, USA
5.7km (3.6 miles) ⓘShell Pond Brook locality, Stow, Oxford County, Maine, USA
References
Bastin, E. S. (1911) Geology of the pegmatites and associated rocks of Maine, including feldspar, quartz, mica, and gem deposits. Bulletin 445. US Geological Survey doi:10.3133/b445
 
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