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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Sphalerite from
Martha Washington group (Martha Washington prospect; King James; Brooklyn group), Silver City, Tintic Mining District, East Tintic Mountains, Utah, USA


Classification
Species:Sphalerite
Formula:ZnS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sphalerite data
Locality Data:Click here to view Martha Washington group (Martha Washington prospect; King James; Brooklyn group), Silver City, Tintic Mining District, East Tintic Mountains, Utah, USA
Data Identifiers
Mindat Occurrence Record ID:615351
Long-form Identifier:1:3:615351:9
GUID (UUID V4):0
Nearest other occurrences of Sphalerite
1.1km (0.7 miles) ⓘUpper dumps, North Star Mine (Star Consolidated Mine), Mammoth, Tintic Mining District, East Tintic Mountains, Utah, USA
1.1km (0.7 miles) ⓘNorth Star Mine (Star Consolidated Mine), Mammoth, Tintic Mining District, East Tintic Mountains, Utah, USA
1.2km (0.7 miles) ⓘLower dumps, North Star Mine (Star Consolidated Mine), Mammoth, Tintic Mining District, East Tintic Mountains, Utah, USA
2.0km (1.3 miles) ⓘLower Mammoth Mine, Mammoth, Tintic Mining District, East Tintic Mountains, Utah, USA
2.3km (1.4 miles) ⓘIron Blossom Mine, Tintic Mining District, East Tintic Mountains, Utah, USA
2.4km (1.5 miles) ⓘJoe Bowers Mine, Treasure Hill, Tintic Mining District, East Tintic Mountains, Utah, USA
2.4km (1.5 miles) ⓘMammoth Mine, Mammoth, Tintic Mining District, East Tintic Mountains, Utah, USA
3.1km (1.9 miles) ⓘShaft No. 1, Colorado Mine, East Tintic Mining District, Utah County, Utah, USA
3.2km (2.0 miles) ⓘGolden Sunset Mine, Mammoth, Tintic Mining District, East Tintic Mountains, Utah, USA
3.8km (2.4 miles) ⓘCentennial Eureka Mine, Eureka, Juab County, Utah, USA
References
Hildreth, Stephen C., Hannah, Judith L. (1996) Fluid inclusion and sulfur isotope studies of the Tintic mining district, Utah; implications for targeting fluid sources. Economic Geology, 91 (7) 1270-1281 doi:10.2113/gsecongeo.91.7.1270
 
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