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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Nepheline from
Big Rock Quarry (3M Quarry; Arch Street Pike Quarry), Granite Mountain area, Little Rock, Pulaski County, Arkansas, USA


Locality type:Quarry
Classification
Species:Nepheline
Formula:Na3K(Al4Si4O16)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Nepheline data
Locality Data:Click here to view Big Rock Quarry (3M Quarry; Arch Street Pike Quarry), Granite Mountain area, Little Rock, Pulaski County, Arkansas, USA
Data Identifiers
Mindat Occurrence Record ID:607392
Long-form Identifier:1:3:607392:3
GUID (UUID V4):0
Nearest other occurrences of Nepheline
2.8km (1.7 miles) ⓘGranite Mountain Quarry No. 1, Granite Mountain Area, Little Rock, Pulaski County, Arkansas, USA
20.7km (12.9 miles) ⓘGranite Mountain No. 3 Quarry, Sweet Home, Granite Mountain complex, Saline County, Arkansas, USA
56.7km (35.2 miles) ⓘKimzey Magnetite Mine, Magnet Cove, Hot Spring County, Arkansas, USA
57.0km (35.4 miles) ⓘMo-Ti Corporation prospect, Magnet Cove, Hot Spring County, Arkansas, USA
59.1km (36.7 miles) ⓘJones Mill Quarry, Magnet Cove, Hot Spring County, Arkansas, USA
59.1km (36.7 miles) ⓘMagnet Cove Baptist Church area, Magnet Cove, Hot Spring County, Arkansas, USA
59.7km (37.1 miles) ⓘDiamond Jo Quarry, Magnet Cove, Hot Spring County, Arkansas, USA
59.7km (37.1 miles) ⓘEudialyte pegmatite, Magnet Cove, Hot Spring County, Arkansas, USA
67.7km (42.1 miles) ⓘWilson Springs (Potash Sulfur Springs), Garland County, Arkansas, USA
68.6km (42.7 miles) ⓘV intrusive, Lake Catherine, Garland County, Arkansas, USA
References
Mineralogical Magazine 1984 48 : 93-96.
 
and/or  
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