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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Corundum from
De Luca Mine (McCoy Mine), Peekskill, Westchester County, New York, USA


Locality type:Mine
Classification
Species:Corundum
Formula:Al2O3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Corundum data
Locality Data:Click here to view De Luca Mine (McCoy Mine), Peekskill, Westchester County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:146997
Long-form Identifier:1:3:146997:4
GUID (UUID V4):0
Nearest other occurrences of Corundum
0.0km (0.0 miles) ⓘPeekskill, Westchester County, New York, USA
0.8km (0.5 miles) ⓘSeptember Mine, Peekskill, Westchester County, New York, USA
2.8km (1.7 miles) ⓘStrang Emery Pit, Toddville, Cortlandt Township, Westchester County, New York, USA
4.0km (2.5 miles) ⓘCrugers Emery Mine, Montrose, Cortlandt Township, Westchester County, New York, USA
6.7km (4.2 miles) ⓘDiRubbo Emery Quarry, Cortlandt Township, Westchester County, New York, USA
43.2km (26.9 miles) ⓘRhein Property, Amity, Town of Warwick, Orange County, New York, USA
44.6km (27.7 miles) ⓘAmity, Town of Warwick, Orange County, New York, USA
53.0km (32.9 miles) ⓘMcAfee, Vernon Township, Sussex County, New Jersey, USA
54.5km (33.8 miles) ⓘInterstate 84 road cuts (Route 6A bypass), Newtown, Fairfield County, Connecticut, USA
54.9km (34.1 miles) ⓘBerry Road kyanite locality, Roxbury, Litchfield County, Connecticut, USA
References
Rocks & Min.: 17:107.
 
and/or  
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