Ajax Mine group, San Luis Mountains, Arivaca Mining District (Las Guijas Mining District), Las Guijas & San Luis Mountains, Pima County, Arizona, USAi
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Latitude & Longitude (WGS84):
31° 32' 28'' North , 111° 20' 16'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Arivaca | 695 (2011) | 3.8km |
| Aduana del Sásabe | 1,295 (2018) | 21.2km |
| Tumacacori-Carmen | 393 (2015) | 27.8km |
| Tubac | 1,191 (2011) | 28.8km |
| Amado | 295 (2011) | 31.8km |
Ref.: Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 103 (Table 4).
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10039619, MRDS ID #M050509; and, Dep. ID #10259099, MAS ID #0040190089.
A former small surface and underground Au-Ag-Pb-Zn-Cu mine on 5 unpatented claims, located in center of East SE ¼ sec. 5, T.22S., R.10E., 2¼ miles S of Arivaca. Produced 1927-1941. Owned at times, or in part, by the Arivaca Gold Mining & Milling Co.; the Ajax Mining Co.; and the Oreona Mining Co. Operated by Ms Evelyn Watkins of Tucson (1965).
Mineralization is argentiferous and auriferous galena, and other sulfides in irregular, lensing quartz-fissure veins (4 veins, 8 to 40 inches wide) cutting metamorphosed, Cretaceous, sedimentary formations. Oxidized near the surface with enrichment of gold and silver. The main vein occupies a contact fissure between quartzite and limestone. The ore body is 1.02 meters wide.
Workings include shallow shafts, cross-cut, with tunnels and stopes, and open cuts, totaling 365.76 meters in length and 51.82 meters deep. Operated from 1927 through 1941. It produced some 200 tons of ore averaging about 0.6 oz. Au/T, 15 oz. Ag/T, 0.7% Cu, and 4% Pb. Considerable zinc was not recovered.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ Galena var. Silver-bearing Galena Formula: PbS with Ag |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | var. Silver-bearing Galena | 2.CD.10 | PbS with Ag |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Ag | Silver | |
| Ag | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
| Pb | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
Other Databases
| Link to USGS MRDS: | 10039619 |
|---|
Other Regions, Features and Areas containing this locality
Mexico
- Sierra Madre OccidentalMountain Range
North AmericaContinent
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Southern Basin and RangeWide Rift
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