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
Coombs Quarries, Bowdoin, Sagadahoc County, Maine, USA


Locality type:Quarry
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Columbite-(Fe)2
Microcline2
Zircon1
Gahnite1
Almandine1
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Coombs Quarries, Bowdoin, Sagadahoc County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:47302
Long-form Identifier:1:3:47302:0
GUID (UUID V4):0
Nearest other occurrences of Muscovite
2.7km (1.7 miles) ⓘWallace Trufant Prospect, Bowdoinham, Sagadahoc County, Maine, USA
3.7km (2.3 miles) ⓘBooker West Quarry, Bowdoin, Sagadahoc County, Maine, USA
5.5km (3.4 miles) ⓘAdderton Prospect, Bowdoinham, Sagadahoc County, Maine, USA
5.7km (3.5 miles) ⓘPowers Mountain Quarries, Topsham, Sagadahoc County, Maine, USA
6.1km (3.8 miles) ⓘBooker Quarry, Topsham, Sagadahoc County, Maine, USA
6.4km (4.0 miles) ⓘHavey #1 & #2 Quarries, Topsham, Sagadahoc County, Maine, USA
7.0km (4.4 miles) ⓘIngalls Quarry, Topsham, Sagadahoc County, Maine, USA
7.2km (4.5 miles) ⓘTrenton Quarry, Topsham, Sagadahoc County, Maine, USA
7.5km (4.7 miles) ⓘGiven #2 Quarry, Topsham, Sagadahoc County, Maine, USA
8.2km (5.1 miles) ⓘSquare Pit (Consolidated #4 Quarry), Topsham, Sagadahoc County, Maine, USA
References
Cameron, Eugene N.
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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