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
Mildren Mine (Mildren claim; Mildred Mine), Mildren Mine group, Ko Vaya, Cababi Mining District (Comobabi Mining District), Comobabi Mountains, Pima 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 Mildren Mine (Mildren claim; Mildred Mine), Mildren Mine group, Ko Vaya, Cababi Mining District (Comobabi Mining District), Comobabi Mountains, Pima County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:537874
Long-form Identifier:1:3:537874:6
GUID (UUID V4):0
Nearest other occurrences of Psilomelane
37.6km (23.3 miles) ⓘCoyote Mountains, Pima County, Arizona, USA
42.5km (26.4 miles) ⓘBaboquivari Mountains, Pima County, Arizona, USA
46.9km (29.1 miles) ⓘBlack Jack Mine, Drew Spring Well, Sheridan Mountains, Cimarron Mining District (Salt Well Mining District), Cimarron & Sheridan Mountains, Pima County, Arizona, USA
47.0km (29.2 miles) ⓘManganese King group, Sheridan Mountains, Cimarron Mining District (Salt Well Mining District), Cimarron & Sheridan Mountains, Pima County, Arizona, USA
47.2km (29.3 miles) ⓘStella Maris No. 1 Mine (Drew Springs Mine; Black Widow Mine), Sheridan Mountains, Cimarron Mining District (Salt Well Mining District), Cimarron & Sheridan Mountains, Pima County, Arizona, USA
48.1km (29.9 miles) ⓘBaboquivari Mine (Black Diamond group; Red and Black Chief group), Baboquivari Mining District, Baboquivari Mountains, Pima County, Arizona, USA
51.5km (32.0 miles) ⓘSunset Mine group (Sunset group; Sunset claims), Silver Bell Mining District, Silver Bell Mountains, Pima County, Arizona, USA
52.6km (32.7 miles) ⓘBlack Diamond group, Cimarron Mountains, Cimarron Mining District (Salt Well Mining District), Cimarron & Sheridan Mountains, Pima County, Arizona, USA
62.1km (38.6 miles) ⓘBlack Dike Mine (Black Dike group; Black Dike claim; Black Dike deposit; Black Dyke Mine; Big Dike; Bobson group; Big Dike Apex & Ajax), Papago Mining District (Sierrita Mining District), Sierrita Mountains, Pima County, Arizona, USA
67.2km (41.7 miles) ⓘLas Guijas Mine group (Immense Lode; Grand Lode; General Electric Mine; General Electric group of claims; Obregon claims; Black Gold group), Las Guijas Mountains, Arivaca Mining District (Las Guijas Mining District), Las Guijas & San Luis Mountains, Pima County, Arizona, USA
References
MRDS databaseDep. ID file #10039661, MRDS ID #M050610.
 
and/or  
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