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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Thomsonite-Ca from
Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA


Locality type:Quarry
Classification
Species:Thomsonite-Ca
Formula:NaCa2[Al5Si5O20] · 6H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Thomsonite-Ca data
Locality Data:Click here to view Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:73187
Long-form Identifier:1:3:73187:2
GUID (UUID V4):0
Nearest other occurrences of Thomsonite-Ca
4.1km (2.5 miles) ⓘLower New Street Quarry, Paterson, Passaic County, New Jersey, USA
4.2km (2.6 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
8.2km (5.1 miles) ⓘProspect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
19.1km (11.9 miles) ⓘDelaware - Lackawanna & Western Railroad tunnels, Bergen Hill, Jersey City, Hudson County, New Jersey, USA
35.0km (21.8 miles) ⓘMillington Quarry, Bernards Township, Somerset County, New Jersey, USA
40.8km (25.4 miles) ⓘPassaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA
41.8km (26.0 miles) ⓘFranklin Mine, Franklin, Sussex County, New Jersey, USA
42.3km (26.3 miles) ⓘMill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
52.3km (32.5 miles) ⓘPeekskill, Westchester County, New York, USA
76.6km (47.6 miles) ⓘTilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA
References
Mins. of NYC & Its Environs, NY Min. Club. (1931), Manchester
NJ Geol. Survey Bull. #64 (1960), Mason, B.
 
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