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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Chalcedony from
Mount Hope Mines (Mt Hope Mines), Mount Hope, Rockaway Township, Morris County, New Jersey, USA


Locality type:Mine
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Mount Hope Mines (Mt Hope Mines), Mount Hope, Rockaway Township, Morris County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:72804
Long-form Identifier:1:3:72804:5
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
6.7km (4.2 miles) ⓘHurd Mine (Hurdtown Mine; Level Mine; Turnpike Mine; South Vein Mine; Bluff Mine), Hurdtown, Jefferson Township, Morris County, New Jersey, USA
9.7km (6.0 miles) ⓘPardee Mine, Green Pond, Rockaway Township, Morris County, New Jersey, USA
23.7km (14.8 miles) ⓘEmerald Drive residential construction site, Hardistonville, Hamburg, Sussex County, New Jersey, USA
27.6km (17.2 miles) ⓘLyons Station, Lyons, Bernards Township, Somerset County, New Jersey, USA
28.1km (17.4 miles) ⓘMillington Quarry, Bernards Township, Somerset County, New Jersey, USA
28.5km (17.7 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
28.7km (17.8 miles) ⓘBraen Quarry, Haledon, Passaic County, New Jersey, USA
28.7km (17.8 miles) ⓘOrange Quarry Company Quarry (Eagle Rock Quarry), West Orange, West Orange, Essex County, New Jersey, USA
28.9km (18.0 miles) ⓘMcDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
29.5km (18.3 miles) ⓘHoudaille Quarry, Little Falls Township, Passaic County, New Jersey, USA
References
NJ State Geol. Ann. Rpt. (1856):192.
The Iron Mines of NJ (1910), Bayley:410.
 
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