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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Prehnite from
McDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA


06144070017367070293747.jpg
Prehnite

McDowell's Quarry, Upper Montclair, Montclair, Essex County, New Jersey, USA
06144070017367070293747.jpg
Prehnite

McDowell's Quarry, Upper Montclair, Montclair, Essex County, New Jersey, USA
06070720017367070304680.jpg
Prehnite

McDowell's Quarry, Upper Montclair, Montclair, Essex County, New Jersey, USA
Locality type:Quarry
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view McDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:73233
Long-form Identifier:1:3:73233:0
GUID (UUID V4):0
Nearest other occurrences of Prehnite
1.5km (1.0 miles) ⓘCedar Grove Reservoir, Cedar Grove, Cedar Grove, Essex County, New Jersey, USA
2.2km (1.4 miles) ⓘMontclair, Montclair, Essex County, New Jersey, USA
2.6km (1.6 miles) ⓘLittle Falls Quarry, Little Falls Township, Passaic County, New Jersey, USA
3.0km (1.8 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
4.1km (2.5 miles) ⓘUnion Building and Construction Quarry, Woodland Park, Passaic County, New Jersey, USA
5.4km (3.4 miles) ⓘMcBride Avenue & Browertown Road pumping station, Woodland Park, Passaic County, New Jersey, USA
5.6km (3.5 miles) ⓘOrange Quarry Company Quarry (Eagle Rock Quarry), West Orange, West Orange, Essex County, New Jersey, USA
6.1km (3.8 miles) ⓘRiverside Quarry, Woodland Park, Passaic County, New Jersey, USA
7.0km (4.3 miles) ⓘLower New Street Quarry, Paterson, Passaic County, New Jersey, USA
7.1km (4.4 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
References
Mins. of NYC & Its Environs, NY Min. Club (1931), Manchester, J.G.
Rocks & Min.: 18:332-333 (1943), Drake, H.Y.
Peters, Joseph J. (1984) Triassic Traprock Minerals of New Jersey. Rocks & Minerals, 59 (4) 157-183 doi:10.1080/00357529.1984.11764472
 
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