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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Ferro-hornblende from
Ryerson de Bow Mine (Bishop Mine; Search Mine), Pompton Station, Riverdale, Morris County, New Jersey, USA


Locality type:Mine
Classification
Species:Ferro-hornblende
Formula:◻Ca2(Fe42+Al)(Si7Al)O22(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ferro-hornblende data
Locality Data:Click here to view Ryerson de Bow Mine (Bishop Mine; Search Mine), Pompton Station, Riverdale, Morris County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:73347
Long-form Identifier:1:3:73347:2
GUID (UUID V4):0
Nearest other occurrences of Ferro-hornblende
2.3km (1.4 miles) ⓘWanaque Mines (Wynokie Mines), Riverdale, Morris County, New Jersey, USA
10.2km (6.3 miles) ⓘLake Valhalla Quarry (Gordon's Crystalline Limestone Quarry), Montville Township, Morris County, New Jersey, USA
11.4km (7.1 miles) ⓘProspect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
11.9km (7.4 miles) ⓘBlue Mine, Ringwood, Passaic County, New Jersey, USA
12.7km (7.9 miles) ⓘWild Cat Mine (Kitchell Mine), Copperas Mountain, Rockaway Township, Morris County, New Jersey, USA
13.4km (8.3 miles) ⓘTorne Quarry, Powerville, Boonton Township, Morris County, New Jersey, USA
13.6km (8.5 miles) ⓘHard Mine, Ringwood, Passaic County, New Jersey, USA
13.6km (8.5 miles) ⓘCannon Mines, Ringwood, Passaic County, New Jersey, USA
13.6km (8.5 miles) ⓘMule Mine, Ringwood, Passaic County, New Jersey, USA
14.1km (8.8 miles) ⓘBush Mine, Ringwood, Passaic County, New Jersey, USA
References
The Iron Mines of NJ (1910), Bayley: 496.
 
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