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


Locality type:Quarry
Classification
Species:Quartz var: Amethyst
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Amethyst 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:73237
Long-form Identifier:1:3:73237:6
GUID (UUID V4):0
Nearest other occurrences of Amethyst
3.0km (1.8 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
3.0km (1.9 miles) ⓘHoudaille Quarry, Little Falls Township, 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
10.1km (6.3 miles) ⓘBraen Quarry, Haledon, Passaic County, New Jersey, USA
11.1km (6.9 miles) ⓘProspect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
12.6km (7.8 miles) ⓘBraens Quarry, North Haledon, Passaic County, New Jersey, USA
18.7km (11.6 miles) ⓘNew York - West Shore & Buffalo RR tunnel, Weehawken, Bergen Hill, Hudson County, New Jersey, USA
19.3km (12.0 miles) ⓘNew York - Susquehanna & Western Railroad tunnel, Edgewater, Bergen County, New Jersey, USA
25.9km (16.1 miles) ⓘDodgewood Road, The Bronx (Bronx County), New York City, New York, 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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