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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Heulandite Subgroup from
Montclair, Montclair, Essex County, New Jersey, USA


04873500017362167734474.jpg
Heulandite Subgroup, etc.

Montclair, Montclair, Essex County, New Jersey, USA
00913360017272023444978.jpg
Heulandite Subgroup, etc.

Montclair, Montclair, Essex County, New Jersey, USA
00954430017369326976368.jpg
Heulandite Subgroup, etc.

Montclair, Montclair, Essex County, New Jersey, USA
04873500017362167734474.jpg
Heulandite Subgroup, etc.

Montclair, Montclair, Essex County, New Jersey, USA
05489550017369326976026.jpg
Heulandite Subgroup, etc.

Montclair, Montclair, Essex County, New Jersey, USA
00954430017369326976368.jpg
Heulandite Subgroup, etc.

Montclair, Montclair, Essex County, New Jersey, USA
04873500017362167734474.jpg
Heulandite Subgroup, etc.

Montclair, Montclair, Essex County, New Jersey, USA
00913360017272023444978.jpg
Heulandite Subgroup, etc.

Montclair, Montclair, Essex County, New Jersey, USA
00954430017369326976368.jpg
Heulandite Subgroup, etc.

Montclair, Montclair, Essex County, New Jersey, USA
Classification
Species:'Heulandite Subgroup' (not an IMA approved species)
Formula:(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz2
Calcite1
Data
Mineral Data:Click here to view Heulandite Subgroup data
Locality Data:Click here to view Montclair, Montclair, Essex County, New Jersey, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:79802
Long-form Identifier:1:3:79802:6
GUID (UUID V4):0
Nearest other occurrences of Heulandite Subgroup
2.2km (1.4 miles) ⓘMcDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
2.3km (1.4 miles) ⓘF.J. Marley Quarry, Verona, Essex County, New Jersey, USA
5.0km (3.1 miles) ⓘHoudaille Quarry, Little Falls Township, Passaic County, New Jersey, USA
5.1km (3.2 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
5.4km (3.4 miles) ⓘGreat Notch, Little Falls Township, Passaic County, New Jersey, USA
6.0km (3.7 miles) ⓘUnion Building and Construction Quarry, Woodland Park, Passaic County, New Jersey, USA
8.3km (5.1 miles) ⓘRiverside Quarry, Woodland Park, Passaic County, New Jersey, USA
9.0km (5.6 miles) ⓘLower New Street Quarry, Paterson, Passaic County, New Jersey, USA
9.1km (5.7 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
9.2km (5.7 miles) ⓘGarret Street condominium construction site, Paterson, Passaic County, New Jersey, USA
References
Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1). New York Mineralogical Clubp.81
 
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