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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Calcite from
Iona Island, Bear Mountain State Park, Rockland County, New York, USA


Locality type:Island
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Iona Island, Bear Mountain State Park, Rockland County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:759182
Long-form Identifier:1:3:759182:2
GUID (UUID V4):0
Nearest other occurrences of Calcite
1.5km (0.9 miles) ⓘAnthony's Nose, Cortlandt Township, Westchester County, New York, USA
2.2km (1.4 miles) ⓘBear Mountain, Bear Mountain State Park, Orange County, New York, USA
2.3km (1.5 miles) ⓘOre loading dock, Fort Montgomery, Town of Highlands, Orange County, New York, USA
3.3km (2.1 miles) ⓘPhilips Mine (Philips Pyrite Mine; Anthony's Nose Pyrrhotite Mine), Town of Philipstown, Putnam County, New York, USA
6.2km (3.9 miles) ⓘVerplanck, Cortlandt Township, Westchester County, New York, USA
6.4km (4.0 miles) ⓘVerplanck Point, Verplanck, Cortlandt Township, Westchester County, New York, USA
6.7km (4.1 miles) ⓘTomkins Cove Quarry, Stony Point (Woodbury), Rockland County, New York, USA
6.7km (4.2 miles) ⓘTodd Mine, Peekskill, Westchester County, New York, USA
6.8km (4.2 miles) ⓘForest of Dean Mine, Fort Montgomery, Town of Highlands, Orange County, New York, USA
7.7km (4.8 miles) ⓘCrugers Emery Mine, Montrose, Cortlandt Township, Westchester County, New York, USA
References
Observed/collected David S. Bernstein 2011
 
and/or  
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