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
Square Pit (Consolidated #4 Quarry), Topsham, Sagadahoc County, Maine, USA


Locality type:Pit
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Microcline2
Beryl1
Molybdenite1
Almandine1
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Square Pit (Consolidated #4 Quarry), Topsham, Sagadahoc County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:29669
Long-form Identifier:1:3:29669:8
GUID (UUID V4):0
Nearest other occurrences of Muscovite
0.1km (0.1 miles) ⓘWilliam Willes #1 Quarry, Topsham, Sagadahoc County, Maine, USA
0.6km (0.4 miles) ⓘStaples Quarry, Topsham, Sagadahoc County, Maine, USA
0.7km (0.5 miles) ⓘMallet Quarry, Topsham, Sagadahoc County, Maine, USA
0.8km (0.5 miles) ⓘFisher Quarry, Topsham, Sagadahoc County, Maine, USA
1.0km (0.6 miles) ⓘTrenton Quarry, Topsham, Sagadahoc County, Maine, USA
1.1km (0.7 miles) ⓘGiven #2 Quarry, Topsham, Sagadahoc County, Maine, USA
1.8km (1.1 miles) ⓘTwin Pits Quarry, Cathance River Nature Preserve, Topsham, Sagadahoc County, Maine, USA
1.8km (1.1 miles) ⓘIngalls Quarry, Topsham, Sagadahoc County, Maine, USA
1.9km (1.2 miles) ⓘHavey #1 & #2 Quarries, Topsham, Sagadahoc County, Maine, USA
1.9km (1.2 miles) ⓘSwamp #1 Quarry, Cathance River Nature Preserve, Topsham, Sagadahoc County, Maine, USA
References
Thompson, Woodrow B., Joyner, Ronald L., Woodman, Raymond G., King, Vandall T. (1998) Bulletin (41), A Collector's Guide to Maine Mineral Localities (3rd ed.) Maine Geological Survey
 
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