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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Opal from
Consolidated Feldspar Mining Corporation's plant, Bedford, Westchester County, New York, USA


Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Consolidated Feldspar Mining Corporation's plant, Bedford, Westchester County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:986397
Long-form Identifier:1:3:986397:2
GUID (UUID V4):0
Nearest other occurrences of Opal
1.0km (0.6 miles) ⓘBedford, Westchester County, New York, USA
1.0km (0.6 miles) ⓘBaylis Quarry (Bayliss Quarry), Bedford, Westchester County, New York, USA
14.9km (9.3 miles) ⓘCasey Quarry (Ridgefield pegmatite), Ridgefield, Fairfield County, Connecticut, USA
18.5km (11.5 miles) ⓘFillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA
20.8km (13.0 miles) ⓘWhite Plains, Westchester County, New York, USA
23.3km (14.5 miles) ⓘStrang Emery Pit, Toddville, Cortlandt Township, Westchester County, New York, USA
24.1km (15.0 miles) ⓘTilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA
24.4km (15.1 miles) ⓘInterstate 84 road cuts, Town of Southeast, Putnam County, New York, USA
24.5km (15.2 miles) ⓘCrugers Emery Mine, Montrose, Cortlandt Township, Westchester County, New York, USA
25.1km (15.6 miles) ⓘPhillips ore bed, Town of Putnam Valley, 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 Clubpages 39 & 45-46
 
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