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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Agate from
American Mine (Alpha Copper Mine; Bridgewater Mine; Somerville Mine; Somerville deposit), Bridgewater Township, Somerset County, New Jersey, USA


Locality type:Mine
Classification
Species:Quartz var: Agate
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Agate data
Locality Data:Click here to view American Mine (Alpha Copper Mine; Bridgewater Mine; Somerville Mine; Somerville deposit), Bridgewater Township, Somerset County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:148253
Long-form Identifier:1:3:148253:9
GUID (UUID V4):0
Nearest other occurrences of Agate
5.5km (3.4 miles) ⓘChimney Rock Quarry, Bridgewater Township, Somerset County, New Jersey, USA
6.5km (4.0 miles) ⓘLiberty Corner, Bernards Township, Somerset County, New Jersey, USA
9.8km (6.1 miles) ⓘMillington Quarry, Bernards Township, Somerset County, New Jersey, USA
14.6km (9.1 miles) ⓘWilson's Quarry (Wilson Stone Co. Quarry), Watchung, Somerset County, New Jersey, USA
37.3km (23.2 miles) ⓘSpottiswoode-Cusack Quarry (George Spottiswood Co. Quarry), West Orange, Essex County, New Jersey, USA
42.6km (26.5 miles) ⓘMcDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
44.8km (27.8 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
45.3km (28.2 miles) ⓘHoudaille Quarry, Little Falls Township, Passaic County, New Jersey, USA
46.4km (28.8 miles) ⓘUnion Building and Construction Quarry, Woodland Park, Passaic County, New Jersey, USA
47.6km (29.6 miles) ⓘLaurel Hill, Secaucus, Hudson County, New Jersey, USA
References
Rocks & Min.: 24:27-29.
 
and/or  
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