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Magnetite 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:Magnetite
Formula:Fe2+Fe23+O4
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 Magnetite 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 Magnetite
24.7km (15.3 miles) Unnamed Fe deposit, San Cayetano Mining District, San Cayetano Mts, Santa Cruz Co., Arizona, USA
27.3km (16.9 miles) Gold Hill Mine, Stevens Mountain, Papago Mining District (Sierrita Mining District), Sierrita Mts, Pima Co., Arizona, USA
28.6km (17.7 miles) Lena No. 1 - 11 claims, Papago Mining District (Sierrita Mining District), Sierrita Mts, Pima Co., Arizona, USA
31.3km (19.5 miles) Amargosa placers (Amargosa Arroyo placers; Tinaja Wash placers), Amargosa Arroyo, Continental, Tinaja Hills, Pima 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
33.3km (20.7 miles) Sierrita Mine (Duval-Sierrita Mine; Duval Esperanza Mine; Sierrita Open Pit Mine), Batamote Hills, Pima Mining District (Olive Mining District; Mineral Hill Mining District; Twin Buttes Mining District), Sierrita Mts, Pima Co., Arizona, USA
33.4km (20.7 miles) Esperanza Mine [new] (Esperanza pit; Esperanza open pit mines; West Esperanza Mine), Pima Mining District (Olive Mining District; Mineral Hill Mining District; Twin Buttes Mining District), Sierrita Mts, Pima Co., Arizona, USA
40.5km (25.2 miles) Bonanza Mine (Bonanza vein; SRK Mine; Mitchell Mine; Kerr Mine; Calvillo Mine), Coyote Mining District, Coyote Mts, Pima Co., Arizona, USA
40.6km (25.2 miles) Copper Queen Mine (Queen Mine), Pima Mining District (Olive Mining District; Mineral Hill Mining District; Twin Buttes Mining District), Sierrita Mts, Pima Co., Arizona, USA
40.7km (25.3 miles) Copper Glance Mine (Glance Mine), Stevens Mountain, Pima Mining District (Olive Mining District; Mineral Hill Mining District; Twin Buttes Mining District), Sierrita Mts, Pima Co., Arizona, USA
 
Mineral and/or Locality  
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