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
Crugers Emery Mine, Montrose, Cortlandt Township, 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 Crugers Emery Mine, Montrose, Cortlandt Township, Westchester County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:80893
Long-form Identifier:1:3:80893:4
GUID (UUID V4):0
Nearest other occurrences of Corundum
3.3km (2.1 miles) ⓘSeptember Mine, Peekskill, Westchester County, New York, USA
4.0km (2.5 miles) ⓘDe Luca Mine (McCoy Mine), Peekskill, Westchester County, New York, USA
4.0km (2.5 miles) ⓘPeekskill, Westchester County, New York, USA
4.6km (2.8 miles) ⓘDiRubbo Emery Quarry, Cortlandt Township, Westchester County, New York, USA
5.1km (3.2 miles) ⓘStrang Emery Pit, Toddville, Cortlandt Township, Westchester County, New York, USA
43.2km (26.9 miles) ⓘRhein Property, Amity, Town of Warwick, Orange County, New York, USA
44.5km (27.6 miles) ⓘAmity, Town of Warwick, Orange County, New York, USA
52.1km (32.4 miles) ⓘMcAfee, Vernon Township, Sussex County, New Jersey, USA
54.9km (34.1 miles) ⓘWindsor Quarry (Winsor Quarry), Rudeville, Hardyston Township, Sussex County, New Jersey, USA
55.7km (34.6 miles) ⓘInterstate 84 road cuts (Route 6A bypass), Newtown, Fairfield County, Connecticut, USA
References
Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1). New York Mineralogical Clubp.70
 
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