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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Manganite from
Geronimo claims (Geronimo group; Cochise group; Beard claims), Steamboat Mountain area, Banner Mining District, Pinal County, Arizona, USA


Locality type:Claim
Classification
Species:Manganite
Formula:Mn3+O(OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Manganite data
Locality Data:Click here to view Geronimo claims (Geronimo group; Cochise group; Beard claims), Steamboat Mountain area, Banner Mining District, Pinal County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:227754
Long-form Identifier:1:3:227754:7
GUID (UUID V4):0
Nearest other occurrences of Manganite
4.3km (2.7 miles) ⓘ79 Mine, Chilito, Hayden area, Banner Mining District, Gila County, Arizona, USA
28.3km (17.6 miles) ⓘTarr & Harper Mine, Putnam Wash, Camp Grant Wash, Crescent Mining District, Black Hills, Pinal County, Arizona, USA
30.3km (18.8 miles) ⓘDaggs group of claims, Belmont Mine (Belmont Copper property; Goodwin Mine; Monte Carlo claim; Smith lease; Doggs Mine; Lone Star Mine), Belmont Canyon, Apache Leap, Superior, Pinal County, Arizona, USA
34.4km (21.4 miles) ⓘMagma Mine, Superior, Pinal County, Arizona, USA
36.1km (22.5 miles) ⓘSilver King Mine, Comstock Wash, Kings Crown Peak area, Pinal County, Arizona, USA
37.4km (23.2 miles) ⓘReymert Mine, Reymert Canyon, Mineral Mountain Mining District, Pinal County, Arizona, USA
42.5km (26.4 miles) ⓘClayshulte Mine (Clayshulte deposit), Table Mountain, Bunker Hill Mining District (Copper Creek Mining District), Pinal County, Arizona, USA
42.9km (26.7 miles) ⓘCalifornia Mine (California group of claims; American group; Globe Commercial Copper Mine; Globe Manganese Mine), Black Peak area, Copper Hill, Globe Hills Mining District, Gila County, Arizona, USA
43.0km (26.7 miles) ⓘMineral Farm Mine (Mineral Farms group; Mineral Farm group; Moonlight & Mineral Farm group; Eagle Pass group of claims; Moonlight; Bennett), Big Johnnie Gulch, Copper Hill, Globe Hills Mining District, Gila County, Arizona, USA
43.9km (27.3 miles) ⓘSilver Glance Mine (Ramboz deposit; Ramboz vein; Rambo group [in part]; Silver Glance deposit; Racine Mines group; Dynomite Mine), Rescue Canyon, Globe Hills Mining District, Gila County, Arizona, USA
References
Dean, K.C., et al (1952), Concentration of oxide manganese ores from vicinity of Winkelman, Pinal County, Arizona, US Bureau of Mines Report of Investigation 4848.
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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