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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Chalcopyrite from
Twin Buttes Mine, Twin Buttes, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA


Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Twin Buttes Mine, Twin Buttes, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:258223
Long-form Identifier:1:3:258223:8
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
1.0km (0.6 miles) ⓘCopper Glance Mine (Glance Mine), Stevens Mountain, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
1.4km (0.9 miles) ⓘCopper Queen Mine (Queen Mine), Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
2.0km (1.3 miles) ⓘCopper Butte Mine (Copper Buttes Copper Mines), Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
2.5km (1.5 miles) ⓘMinnie Mine (Venus group; Arizona Buttes group), Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
2.9km (1.8 miles) ⓘPandora Mine, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
3.2km (2.0 miles) ⓘSenator Morgan Mine group, Twin Buttes, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
3.5km (2.2 miles) ⓘNew Years Eve Mine (Red Carbonate Mine; Amargosa Mine; Amargosa property; Snyder group), Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
3.5km (2.2 miles) ⓘGladstone prospect, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
3.9km (2.4 miles) ⓘScorpio Annex Copper project, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
6.7km (4.2 miles) ⓘCrown King & Tiger Mine groups (Crown King and Tiger Mines), Esperanza Mine group [old], Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
References
Galbraith, F. W. (1947) Minerals of Arizona (Second Edition, Revised). University of Arizona Bulletin 153. Arizona Bureau of Mines
Anthony, John W.; Williams, Sidney A.; Bideaux, Richard A.; Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.p.166
 
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