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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Tourmaline from
Crugers Emery Mine, Montrose, Cortlandt Township, Westchester County, New York, USA


Locality type:Mine
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Crugers Emery Mine, Montrose, Cortlandt Township, Westchester County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:81027
Long-form Identifier:1:3:81027:6
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
4.0km (2.5 miles) ⓘPeekskill, Westchester County, New York, USA
15.6km (9.7 miles) ⓘWest Point, Orange County, New York, USA
19.1km (11.8 miles) ⓘCanada Mine, Canada Mines Group (Canada Iron Mines), Town of Putnam Valley, Putnam County, New York, USA
20.8km (12.9 miles) ⓘMahopac Mines, Town of Carmel, Putnam County, New York, USA
23.9km (14.8 miles) ⓘBedford, Westchester County, New York, USA
26.9km (16.7 miles) ⓘHobby Hill Quarry, North Castle, Westchester County, New York, USA
27.6km (17.1 miles) ⓘHobby Quarry (Buresch Quarry), North Castle, Westchester County, New York, USA
28.7km (17.9 miles) ⓘLake Mine, Sterling Lake, Town of Warwick, Orange County, New York, USA
28.7km (17.9 miles) ⓘSterling Mines group, Sterling Lake, Town of Warwick, Orange County, New York, USA
29.3km (18.2 miles) ⓘTilly Foster Iron Mine, Town of Southeast, Putnam County, New York, 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.72
 
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