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-AN from
Margerum Brothers Quarry, West Windsor Township, Mercer County, New Jersey, USA


Locality type:Quarry
Classification
Species:Opal var: Opal-AN
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal-AN data
Locality Data:Click here to view Margerum Brothers Quarry, West Windsor Township, Mercer County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:80111
Long-form Identifier:1:3:80111:7
GUID (UUID V4):0
Nearest other occurrences of Opal-AN
51.7km (32.2 miles) ⓘPeter's Quarry, Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
51.8km (32.2 miles) ⓘBarber's Quarry, Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
57.1km (35.5 miles) ⓘWissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
63.2km (39.2 miles) ⓘLowrance Mine, Netcong, Morris County, New Jersey, USA
64.2km (39.9 miles) ⓘF.J. Marley Quarry, Verona, Essex County, New Jersey, USA
66.5km (41.3 miles) ⓘPennsylvania Railroad cut, Mt Pleasant, Bergen Hill, Jersey City, Hudson County, New Jersey, USA
67.9km (42.2 miles) ⓘBEMCO prospect (Charlotte Mine), Cranberry Lake, Byram Township, Sussex County, New Jersey, USA
72.0km (44.7 miles) ⓘNew York - West Shore & Buffalo RR tunnel, Weehawken, Bergen Hill, Hudson County, New Jersey, USA
74.8km (46.5 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
77.9km (48.4 miles) ⓘ106th Street & Central Park West, Manhattan (New York County), New York City, 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.88
 
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