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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Laumontite from
American Mine (Alpha Copper Mine; Bridgewater Mine; Somerville Mine; Somerville deposit), Bridgewater Township, Somerset County, New Jersey, USA


Locality type:Mine
Classification
Species:Laumontite
Formula:CaAl2Si4O12 · 4H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Laumontite data
Locality Data:Click here to view American Mine (Alpha Copper Mine; Bridgewater Mine; Somerville Mine; Somerville deposit), Bridgewater Township, Somerset County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:79117
Long-form Identifier:1:3:79117:5
GUID (UUID V4):0
Nearest other occurrences of Laumontite
38.9km (24.2 miles) ⓘMontville serpentine deposit, Montville Township, Morris County, New Jersey, USA
40.4km (25.1 miles) ⓘGoat Hill Quarry, West Amwell Township, Hunterdon County, New Jersey, USA
42.6km (26.5 miles) ⓘMcDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
43.5km (27.0 miles) ⓘCedar Grove Reservoir, Cedar Grove, Cedar Grove, Essex County, New Jersey, USA
44.8km (27.8 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
44.9km (27.9 miles) ⓘGreat Notch, Little Falls Township, Passaic County, New Jersey, USA
46.7km (29.0 miles) ⓘMcBride Avenue & Browertown Road pumping station, Woodland Park, Passaic County, New Jersey, USA
47.6km (29.6 miles) ⓘLaurel Hill, Secaucus, Hudson County, New Jersey, USA
47.7km (29.7 miles) ⓘNew Jersey Railroad cut, Bergen Hill, Jersey City, Hudson County, New Jersey, USA
48.5km (30.1 miles) ⓘLower New Street Quarry, Paterson, Passaic County, New Jersey, USA
References
The Minerals of NYC & Its Environs, NY Min. Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 35. .
 
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