San Juan Mine (Peacock Mine), Peterson Wash, Lone Star Mining District (Safford Mining District; Dos Pobres Mining District), Graham County, Arizona, USAi
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Latitude & Longitude (WGS84):
32° 56' 50'' North , 109° 39' 1'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
A former underground Cu-Ag-Au-Mo mine located in the SW¼ sec. 35, T5S, R26E and in sec. 2, T6S, R26E (Safford 15 minute topo map), 8.5 miles NE of Safford, on the SW slopes of the Gila Mountains, on private land. Owned by Gila Valley Copper Co. (1905); Federal Mining Co.; and the Gila Valley Copper Co. (1909). Operated by Gila Mountain Copper Co.; San Juan Copper Co.; and the Atlas Copper Co. (1909).
Mineralization is an irregular orebody hosted in San Juan stock (quartz monzonite). Ore control was veins and fractures in Quartz Monzonite Porphyry with some disseminated sulfides. Concentration was supergene enrichment. Alteration was potassic, phyllic, argillic, and propylitic in zones out from the stock.
Area structures include the San Juan shear zone 3000 feet wide, and 9000-10000 feet long, strike N50°-65°E and intersecting shears.
Workings total 152.4 meters in length and 129.54 meters in depth. Developments include 130, 325, and 425 foot deep shafts and 90, 100, and 300 foot long tunnels. A 50 ton per day concentration mill was built on the San Juan claim in 1906 by the Gila Valley Copper Co. which began shipping concentrates to the Old Dominion smelter at Globe in 1906. Late acquisition by the Major Mining Co. (Phelps Dodge, 1992) due to difficulties in dealing with property owners.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Antlerite Formula: Cu3(SO4)(OH)4 |
| ⓘ Brochantite Formula: Cu4(SO4)(OH)6 |
| ⓘ Chalcocite Formula: Cu2S |
| ⓘ Chalcopyrite Formula: CuFeS2 Description: Occurs in a low-grade sulfide deposit. |
| ⓘ 'Chlorite Group' |
| ⓘ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| ⓘ Cuprite Formula: Cu2O |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) Description: Occurs in the strong propylitic alteration zone which is locally peripheral to a chlorite-pyrite zone, in andesite, associated with chlorite and carbonate. |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Jarosite Formula: KFe3+3(SO4)2(OH)6 |
| ⓘ 'Limonite' |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Molybdenite Formula: MoS2 |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Tenorite Formula: CuO |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Molybdenite | 2.EA.30 | MoS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cuprite | 4.AA.10 | Cu2O |
| ⓘ | Tenorite | 4.AB.10 | CuO |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Antlerite | 7.BB.15 | Cu3(SO4)(OH)4 |
| ⓘ | Brochantite | 7.BB.25 | Cu4(SO4)(OH)6 |
| ⓘ | Jarosite | 7.BC.10 | KFe3+3(SO4)2(OH)6 |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Limonite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Antlerite | Cu3(SO4)(OH)4 |
| H | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| H | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| C | Carbon | |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Antlerite | Cu3(SO4)(OH)4 |
| O | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| O | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | ⓘ Cuprite | Cu2O |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Tenorite | CuO |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| S | Sulfur | |
| S | ⓘ Antlerite | Cu3(SO4)(OH)4 |
| S | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Chalcocite | Cu2S |
| S | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| S | ⓘ Molybdenite | MoS2 |
| S | ⓘ Pyrite | FeS2 |
| K | Potassium | |
| K | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Antlerite | Cu3(SO4)(OH)4 |
| Cu | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Chalcocite | Cu2S |
| Cu | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | ⓘ Cuprite | Cu2O |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Cu | ⓘ Tenorite | CuO |
| Mo | Molybdenum | |
| Mo | ⓘ Molybdenite | MoS2 |
Other Databases
| Link to USGS MRDS: | 10027008 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mazatzal DomainDomain
- Southern Basin and RangeWide Rift
USA
- Gila MountainsMountain Range
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San Juan Mine, Peterson Wash, Lone Star Mining District, Graham County, Arizona, USA