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
Harrison, Westchester County, New York, USA


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 Harrison, Westchester County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:79656
Long-form Identifier:1:3:79656:9
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
3.2km (2.0 miles) ⓘRye, Westchester County, New York, USA
12.8km (8.0 miles) ⓘEastchester, The Bronx (Bronx County), New York City, New York, USA
15.8km (9.8 miles) ⓘYonkers, Westchester County, New York, USA
19.7km (12.2 miles) ⓘ218th Street & Broadway, Manhattan (New York County), New York City, New York, USA
20.2km (12.5 miles) ⓘHarlem Ship Canal, Manhattan (New York County), New York City, New York, USA
21.4km (13.3 miles) ⓘFort George (192nd Street & Audubon Avenue), Washington Heights, Manhattan (New York County), New York City, New York, USA
23.7km (14.7 miles) ⓘ165th Street & Riverside Drive, Manhattan (New York County), New York City, New York, USA
24.4km (15.1 miles) ⓘHobby Quarry (Buresch Quarry), North Castle, Westchester County, New York, USA
24.5km (15.2 miles) ⓘHobby Hill Quarry, North Castle, Westchester County, New York, USA
27.1km (16.8 miles) ⓘBedford, Westchester 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.76
 
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