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Psilomelane from
Las Guijas Mine group (Immense Lode; Grand Lode; General Electric Mine; General Electric group of claims; Obregon claims; Black Gold group), Las Guijas Mts, Arivaca Mining District (Las Guijas Mining District), Las Guijas & San Luis Mts, Pima Co., Arizona, USA

Classification
Species:'Psilomelane' (not an IMA approved species)
Formula:Mn, O
Confirmation
Validity:Believed Valid
References
References:Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 105 (Table 4); Dale, et al (1960): 102-104; Arizona Bureau of Mines file data.
Data
Mineral Data:Click here to view Psilomelane data
Locality Data:Click here to view Las Guijas Mine group (Immense Lode; Grand Lode; General Electric Mine; General Electric group of claims; Obregon claims; Black Gold group), Las Guijas Mts, Arivaca Mining District (Las Guijas Mining District), Las Guijas & San Luis Mts, Pima Co., Arizona, USA
Nearest other occurrences of Psilomelane
21.8km (13.6 miles) Baboquivari Mine (Black Diamond group; Red and Black Chief group), Baboquivari Mining District, Baboquivari Mts, Pima Co., Arizona, USA
25.2km (15.7 miles) Loma de Manganese Mine, Oro Blanco Mining District (Ruby Mining District), Oro Blanco Mts, Santa Cruz Co., Arizona, USA
32.0km (19.9 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 Mts, Pima Co., Arizona, USA
40.9km (25.4 miles) Glove Mine (Sunrise Mine), Glove Mine group (Zombie & Zeco claims; Festiago-Franklin; Blacksmith adit), Cottonwood Canyon, Tyndall Mining District, Santa Rita Mts, Santa Cruz Co., Arizona, USA
47.4km (29.5 miles) Lead prospect, Madera Canyon, Old Baldy Mining District, Santa Rita Mts, Santa Cruz Co., Arizona, USA
58.9km (36.6 miles) Sonoita prospect, Wrightson Mining District, Santa Rita Mts, Santa Cruz Co., Arizona, USA
59.1km (36.7 miles) Jarilla Mine group (Jarilla Mine; Bullion Mine), Palmetto Mining District, Patagonia Mts, Santa Cruz Co., Arizona, USA
59.2km (36.8 miles) Robert E. Lee Mine (Bob Lee Mine; Bob Lee and Widow Mine), Tres de Mayo Mine group, Palmetto District, Fresno Canyon, Patagonia Mts, Santa Cruz Co., Arizona, USA
59.5km (37.0 miles) Tres de Mayo Mine group, Fresno Canyon, Palmetto Mining District, Patagonia Mts, Santa Cruz Co., Arizona, USA
59.6km (37.0 miles) Palmetto Mine, Tres de Mayo Mine group, Fresno Canyon, Palmetto Mining District, Patagonia Mts, Santa Cruz Co., Arizona, USA
 
Mineral and/or Locality  
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