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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Gypsum from
Houdaille Quarry, Little Falls Township, Passaic County, New Jersey, USA


Locality type:Quarry
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Comments:Terminated transparent plates on calcite with quartz
Habit:Monoclinic
Colour:Clear
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Houdaille Quarry, Little Falls Township, Passaic County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:997158
Long-form Identifier:1:3:997158:5
GUID (UUID V4):0
Nearest other occurrences of Gypsum
1.0km (0.6 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
1.1km (0.7 miles) ⓘUnion Building and Construction Quarry, Woodland Park, Passaic County, New Jersey, USA
3.0km (1.9 miles) ⓘMcDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
4.0km (2.5 miles) ⓘLower New Street Quarry, Paterson, Passaic County, New Jersey, USA
4.1km (2.6 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
7.3km (4.5 miles) ⓘBraen Quarry, Haledon, Passaic County, New Jersey, USA
8.2km (5.1 miles) ⓘProspect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
9.6km (6.0 miles) ⓘBraens Quarry, North Haledon, Passaic County, New Jersey, USA
11.7km (7.3 miles) ⓘSchuyler Copper Mine, North Arlington, Bergen County, New Jersey, USA
13.3km (8.3 miles) ⓘRiker Hill, Livingston, Livingston, Essex County, New Jersey, USA
References
Collected by Vince Rizzo, Specimen currently in Bob Batic collection
 
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