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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Plagioclase from
Canada Mine, Canada Mines Group (Canada Iron Mines), Town of Putnam Valley, Putnam County, New York, USA


Locality type:Mine
Classification
Species:'Plagioclase' (not an IMA approved species)
Formula:(Na,Ca)[(Si,Al)AlSi2]O8
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Plagioclase data
Locality Data:Click here to view Canada Mine, Canada Mines Group (Canada Iron Mines), Town of Putnam Valley, Putnam County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:83087
Long-form Identifier:1:3:83087:2
GUID (UUID V4):0
Nearest other occurrences of Plagioclase
27.7km (17.2 miles) ⓘGreenwood mine (Patterson mine), Town of Tuxedo, Orange County, New York, USA
29.8km (18.5 miles) ⓘWestern Connecticut State University, Danbury, Fairfield County, Connecticut, USA
39.0km (24.2 miles) ⓘPatterson Mine, Southfields, Town of Tuxedo, Orange County, New York, USA
39.0km (24.2 miles) ⓘMountain Mine, Southfields, Town of Tuxedo, Orange County, New York, USA
41.4km (25.7 miles) ⓘLake Mine, Sterling Lake, Town of Warwick, Orange County, New York, USA
41.8km (25.9 miles) ⓘUpper California Mine, Sterling Mines group, Sterling Lake, Town of Warwick, Orange County, New York, USA
49.7km (30.9 miles) ⓘMount Adam, Pine Island, Town of Warwick, Orange County, New York, USA
50.3km (31.2 miles) ⓘBoard feldspar deposit, Monks, Ringwood, Passaic County, New Jersey, USA
52.1km (32.4 miles) ⓘStonetown, Ringwood, Passaic County, New Jersey, USA
58.0km (36.1 miles) ⓘMetro North Train Station, Fairfield, Fairfield County, Connecticut, USA
References
Clarke, John M. (1921, September) The Magnetite Iron Deposits of Southeastern New York. New York State Museum Bulletin Vol. 249-250. The University of the State of New Yorkp.111
 
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