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While externally similar shapes, these two minerals are very different inside.
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Pectolite from
Little Falls Quarry, Little Falls Township, Passaic County, New Jersey, USA


Locality type:Quarry
Classification
Species:Pectolite
Formula:NaCa2Si3O8(OH)
Comments:Occurs in cavities and fractures in Watchung basalt.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pectolite data
Locality Data:Click here to view Little Falls Quarry, Little Falls Township, Passaic County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:70732
Long-form Identifier:1:3:70732:5
GUID (UUID V4):0
Nearest other occurrences of Pectolite
0.9km (0.5 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
1.1km (0.7 miles) ⓘGreat Notch, Little Falls Township, Passaic County, New Jersey, USA
1.4km (0.9 miles) ⓘCedar Grove Reservoir, Cedar Grove, Cedar Grove, Essex County, New Jersey, USA
2.6km (1.6 miles) ⓘMcDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
4.4km (2.7 miles) ⓘLower New Street Quarry, Paterson, Passaic County, New Jersey, USA
4.5km (2.8 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
4.6km (2.9 miles) ⓘGarret Street condominium construction site, Paterson, Passaic County, New Jersey, USA
6.0km (3.7 miles) ⓘHinchcliffe Stadium, Paterson, Passaic County, New Jersey, USA
6.2km (3.9 miles) ⓘInterstate 80 roadcut, Paterson, Passaic County, New Jersey, USA
6.2km (3.9 miles) ⓘHoxie's Quarry, Paterson, Passaic County, New Jersey, USA
References
A Quest for New Jersey Minerals, Robert Speiser(1978):12.
 
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