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
Porter Landing prospects, Freeport, Cumberland County, Maine, USA


Locality type:Prospect
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 Porter Landing prospects, Freeport, Cumberland County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:33577
Long-form Identifier:1:3:33577:5
GUID (UUID V4):0
Nearest other occurrences of Muscovite
3.1km (1.9 miles) ⓘWolfe's Neck locality, Freeport, Cumberland County, Maine, USA
4.0km (2.5 miles) ⓘPound of Tea Island Epidote locality, Freeport, Cumberland County, Maine, USA
6.5km (4.0 miles) ⓘLaChance Quarry, Brunswick, Cumberland County, Maine, USA
8.6km (5.4 miles) ⓘBradbury Mountain State Park locality, Pownal, Cumberland County, Maine, USA
10.8km (6.7 miles) ⓘTryon Mountain Quarries, Pownal, Cumberland County, Maine, USA
12.8km (7.9 miles) ⓘRussell Brothers Quarry, Topsham, Sagadahoc County, Maine, USA
12.9km (8.0 miles) ⓘYedlin Locality, Standpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
13.1km (8.1 miles) ⓘStandpipe Hill Quarries, Topsham, Sagadahoc County, Maine, USA
13.3km (8.3 miles) ⓘPejepscot Quarry, Topsham, Sagadahoc County, Maine, USA
13.5km (8.4 miles) ⓘRailroad Quarry, Topsham, Sagadahoc County, Maine, USA
References
 
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