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Opal from
Consolidated Feldspar Mining Corporation's plant (Baylis prospect (property) & Speranza prospect (property)), Bedford, Westchester Co., New York, USA

Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
References
References:The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 39 & 45-46.
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Consolidated Feldspar Mining Corporation's plant (Baylis prospect (property) & Speranza prospect (property)), Bedford, Westchester Co., New York, USA
Nearest other occurrences of Opal
0.7km (0.4 miles) Bedford, Westchester Co., New York, USA
0.7km (0.4 miles) Baylis Quarry (Bayliss Quarry), Bedford, Westchester Co., New York, USA
15.2km (9.5 miles) Casey Quarry (Ridgefield pegmatite), Ridgefield, Fairfield County, Connecticut, USA
15.6km (9.7 miles) Ridgefield, Fairfield County, Connecticut, USA
19.2km (11.9 miles) Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA
20.6km (12.8 miles) Interstate 84 road cuts, Brewster, Southeast Township, Putnam Co., New York, USA
20.8km (12.9 miles) White Plains, Westchester Co., New York, USA
22.3km (13.9 miles) Strang Emery Pit, Toddville, Cortlandt Township, Westchester Co., New York, USA
23.5km (14.6 miles) Crugers Emery Mine, Montrose, Cortlandt Township, Westchester Co., New York, USA
24.1km (15.0 miles) Tilly Foster Iron Mine, Brewster, Town of Southeast, Putnam Co., New York, USA
 
Mineral and/or Locality  
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