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
George Porter Quarry, Alstead, Cheshire County, New Hampshire, USA


Locality type:Quarry
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 George Porter Quarry, Alstead, Cheshire County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:50971
Long-form Identifier:1:3:50971:4
GUID (UUID V4):0
Nearest other occurrences of Muscovite
2.5km (1.6 miles) ⓘTurner Mine, Marlow, Cheshire County, New Hampshire, USA
2.7km (1.7 miles) ⓘDavidson Farm pegmatite, Alstead, Cheshire County, New Hampshire, USA
2.9km (1.8 miles) ⓘAllen Quarry, Alstead, Cheshire County, New Hampshire, USA
3.3km (2.1 miles) ⓘColony Quarry, Alstead, Cheshire County, New Hampshire, USA
3.7km (2.3 miles) ⓘYuhas No. 2 Quarry, Acworth, Sullivan County, New Hampshire, USA
3.9km (2.4 miles) ⓘYuhas No. 1 Quarry, Acworth, Sullivan County, New Hampshire, USA
4.6km (2.9 miles) ⓘProvencher Quarry, Alstead, Cheshire County, New Hampshire, USA
4.8km (3.0 miles) ⓘFitzgibbons Mine, Alstead, Cheshire County, New Hampshire, USA
5.0km (3.1 miles) ⓘLyman Quarry, Alstead, Cheshire County, New Hampshire, USA
6.0km (3.7 miles) ⓘBritton Quarry, Alstead, Cheshire County, New Hampshire, USA
References
Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James J., Stewart, Glen W., Shainin, Vincent E. (1954) Pegmatite Investigations, 1942-45, in New England. Geological Survey Professional Paper 255. US Geological Survey doi:10.3133/pp255
 
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