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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Psilomelane from
Sheep Tanks Mine (Sheep Tank Mine; Resolution group), Sheep Tanks Mining District, Little Horn Mountains, Yuma County, Arizona, USA


Locality type:Mine
Classification
Species:'Psilomelane' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Psilomelane data
Locality Data:Click here to view Sheep Tanks Mine (Sheep Tank Mine; Resolution group), Sheep Tanks Mining District, Little Horn Mountains, Yuma County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:251306
Long-form Identifier:1:3:251306:5
GUID (UUID V4):0
Nearest other occurrences of Psilomelane
17.5km (10.9 miles) ⓘBlack King Mine, Tank Mountains Mining District, Tank Mountains, Yuma County, Arizona, USA
21.6km (13.4 miles) ⓘNorth Star Mine (Northstar Mine), Kofa Mining District, Yuma County, Arizona, USA
21.7km (13.5 miles) ⓘBlack Dahlia Mine, Kofa Mining District, Yuma County, Arizona, USA
24.7km (15.4 miles) ⓘBlack Buck & Buckhorn Mine, Eagle Tail Mining District, Eagletail Mts (Cemetary Ridge), La Paz County, Arizona, USA
29.6km (18.4 miles) ⓘBlack Hawk Mine, Eagle Tail Mining District, Eagletail Mts (Cemetary Ridge), La Paz County, Arizona, USA
32.8km (20.4 miles) ⓘNational Debt Mine, Bear Hills, Plomosa Mining District, Plomosa Mountains, La Paz County, Arizona, USA
46.7km (29.0 miles) ⓘPerry Mine, Plomosa Mining District, Plomosa Mountains, La Paz County, Arizona, USA
58.1km (36.1 miles) ⓘBlack Sue group, Aguila Mining District, Maricopa County, Arizona, USA
63.4km (39.4 miles) ⓘBlack Queen Mine (Hatton claims; Amour group; Armour group), Aguila Mining District, Maricopa County, Arizona, USA
63.9km (39.7 miles) ⓘWisconsin Mine (Black Raven & Crow groups; Pittsburgh Mine; Smithwick Mine), Little Horn Peak, Aguila Mining District, Maricopa County, Arizona, USA
References
Romslo, T.M.; Ravitz, S.F. (1947, July) Arizona Manganese-Silver Ores. Report of Investigations 4097. U.S. 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.339
 
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