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
Pound of Tea Island Epidote locality, Freeport, Cumberland 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 Pound of Tea Island Epidote locality, Freeport, Cumberland County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:538397
Long-form Identifier:1:3:538397:9
GUID (UUID V4):0
Nearest other occurrences of Muscovite
1.3km (0.8 miles) ⓘWolfe's Neck locality, Freeport, Cumberland County, Maine, USA
4.0km (2.5 miles) ⓘPorter Landing prospects, Freeport, Cumberland County, Maine, USA
9.9km (6.1 miles) ⓘLaChance Quarry, Brunswick, Cumberland County, Maine, USA
11.6km (7.2 miles) ⓘBradbury Mountain State Park locality, Pownal, Cumberland County, Maine, USA
13.7km (8.5 miles) ⓘTryon Mountain Quarries, Pownal, Cumberland County, Maine, USA
15.9km (9.9 miles) ⓘRussell Brothers Quarry, Topsham, Sagadahoc County, Maine, USA
16.1km (10.0 miles) ⓘYedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
16.2km (10.1 miles) ⓘStandpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
16.9km (10.5 miles) ⓘRailroad Quarry, Topsham, Sagadahoc County, Maine, USA
17.0km (10.6 miles) ⓘPejepscot Quarry, Topsham, Sagadahoc County, Maine, USA
References
Zodac, P. (1950) Pound of Tea Island, Maine. Rocks & Minerals 25:136-138
King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey.
 
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