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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Stilpnomelane from
Goat Hill Quarry, West Amwell Township, Hunterdon County, New Jersey, USA


Locality type:Hill
Classification
Species:Stilpnomelane
Formula:K4Fe482+[Si64Al8]O164(OH)52 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Stilpnomelane data
Locality Data:Click here to view Goat Hill Quarry, West Amwell Township, Hunterdon County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:360314
Long-form Identifier:1:3:360314:7
GUID (UUID V4):0
Nearest other occurrences of Stilpnomelane
68.5km (42.6 miles) ⓘFrench Creek Mines, Saint Peters, Warwick Township, Chester County, Pennsylvania, USA
75.7km (47.0 miles) ⓘHopewell mine, Hopewell Mines, Warwick (Saint Marys), Warwick Township, Chester County, Pennsylvania, USA
75.7km (47.0 miles) ⓘHopewell Mines, Warwick (Saint Marys), Warwick Township, Chester County, Pennsylvania, USA
85.0km (52.8 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
85.5km (53.1 miles) ⓘLaurel Hill, Secaucus, Hudson County, New Jersey, USA
88.8km (55.2 miles) ⓘLower New Street Quarry, Paterson, Passaic County, New Jersey, USA
90.3km (56.1 miles) ⓘBuckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA
90.4km (56.2 miles) ⓘTaylor Road dumps, Franklin Mine, Franklin, Sussex County, New Jersey, USA
90.6km (56.3 miles) ⓘFranklin Mine, Franklin, Sussex County, New Jersey, USA
90.8km (56.4 miles) ⓘTrotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
References
Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.
 
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