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
Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA


09563900017271982443881.jpg
Prehnite

Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
07759150017362481832146.jpg
Prehnite, etc.

Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
04935860017271982399927.jpg
Prehnite

Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
05030460017271982307086.jpg
Prehnite, etc.

Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
09563900017271982443881.jpg
Prehnite

Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
02016570017362481859109.jpg
Prehnite, etc.

Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
Locality type:Quarry
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Heulandite Subgroup1
Pumpellyite Subgroup1
Datolite1
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:73205
Long-form Identifier:1:3:73205:7
GUID (UUID V4):0
Nearest other occurrences of Prehnite
0.9km (0.5 miles) ⓘLittle Falls Quarry, Little Falls Township, Passaic County, New Jersey, USA
1.5km (0.9 miles) ⓘCedar Grove Reservoir, Cedar Grove, Cedar Grove, Essex County, New Jersey, USA
1.7km (1.1 miles) ⓘUnion Building and Construction Quarry, Woodland Park, Passaic County, New Jersey, USA
2.5km (1.5 miles) ⓘMcBride Avenue & Browertown Road pumping station, Woodland Park, Passaic County, New Jersey, USA
3.0km (1.8 miles) ⓘMcDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
3.2km (2.0 miles) ⓘRiverside Quarry, Woodland Park, Passaic County, New Jersey, USA
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
4.4km (2.7 miles) ⓘGarret Street condominium construction site, Paterson, Passaic County, New Jersey, USA
5.1km (3.2 miles) ⓘMontclair, Montclair, Essex County, New Jersey, USA
References
Min. Collector: 15:113-118 (1908), Papke
Mins. of NYC & Its Environs, NY Min. Club (1931), Manchester, J.G.
Sachs, Walter P. (1940) The Story of the Great Notch Quarry. Rocks & Minerals, 15 (4) 111-115 doi:10.1080/00357529.1940.11762534
NJ Geol. Survey Bull. #64 (1960), Mason, B.
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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