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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Calcite from
Feltville Copper mine, Glenside Park (Feltville), Watchung Reservation, Union County, New Jersey, USA


Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Feltville Copper mine, Glenside Park (Feltville), Watchung Reservation, Union County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:79609
Long-form Identifier:1:3:79609:1
GUID (UUID V4):0
Nearest other occurrences of Calcite
3.0km (1.9 miles) ⓘFanwood Quarry (Weldon Quarry), Watchung, Somerset County, New Jersey, USA
4.8km (3.0 miles) ⓘHoudaille Quarry (Summit Quarry; Commonwealth Quarry), Springfield, Springfield Township, Union County, New Jersey, USA
7.4km (4.6 miles) ⓘWilson's Quarry (Wilson Stone Co. Quarry), Watchung, Somerset County, New Jersey, USA
8.0km (5.0 miles) ⓘStewart Hartshorn Quarry (Hartshorn Quarry), Millburn, Millburn, Essex County, New Jersey, USA
9.5km (5.9 miles) ⓘHartshorn Quarry, Short Hills, Millburn, Essex County, New Jersey, USA
11.6km (7.2 miles) ⓘFields' Copper Mine (Field Mine), Warrenville, Warren Township, Somerset County, New Jersey, USA
13.0km (8.1 miles) ⓘMillington Quarry, Bernards Township, Somerset County, New Jersey, USA
14.1km (8.8 miles) ⓘFawn Drive excavations, Livingston, Livingston, Essex County, New Jersey, USA
14.2km (8.8 miles) ⓘMorristown occurrences, Morristown, Morris County, New Jersey, USA
14.3km (8.9 miles) ⓘRiker Hill, Livingston, Livingston, Essex 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.74
 
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