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
Cape Rosier Mine (Callahan Mine; Rosier Consolidated Mine), Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA


Locality type:Mine
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 Cape Rosier Mine (Callahan Mine; Rosier Consolidated Mine), Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:538401
Long-form Identifier:1:3:538401:3
GUID (UUID V4):0
Nearest other occurrences of Muscovite
5.8km (3.6 miles) ⓘTapley Mine, Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA
10.2km (6.3 miles) ⓘBlack Hawk Mine, Brooksville, Blue Hill - Castine Mining District, Hancock County, Maine, USA
10.9km (6.8 miles) ⓘEggemoggin Silver mine, Sedgwick, Hancock County, Maine, USA
11.4km (7.1 miles) ⓘDeer Isle Town quarry, Little Deer Isle, Deer Isle, Hancock County, Maine, USA
14.7km (9.1 miles) ⓘOwen Lead Prospect, Blue Hill, Blue Hill - Castine Mining District, Hancock County, Maine, USA
14.8km (9.2 miles) ⓘMammoth Mine, Blue Hill, Blue Hill - Castine Mining District, Hancock County, Maine, USA
14.9km (9.2 miles) ⓘOwen Mine, Blue Hill, Blue Hill - Castine Mining District, Hancock County, Maine, USA
15.9km (9.9 miles) ⓘStewart Mine, Blue Hill, Blue Hill - Castine Mining District, Hancock County, Maine, USA
16.4km (10.2 miles) ⓘBlue Hill mine, Blue Hill, Blue Hill - Castine Mining District, Hancock County, Maine, USA
16.9km (10.5 miles) ⓘTwin Lead Mine, Blue Hill, Blue Hill - Castine Mining District, Hancock County, Maine, USA
References
Paul St. Pierre
 
and/or  
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