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Amado Mine group, Las Guijas 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° 35' 34'' North , 111° 20' 33'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Arivaca | 695(2011) | 2.2km |
| Aduana del Sásabe | 1,295(2018) | 23.6km |
| Tumacacori-Carmen | 393(2015) | 28.0km |
| Tubac | 1,191(2011) | 28.2km |
| Amado | 295(2011) | 29.2km |
Ref.: Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 104 (Table 4).
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10109615, MRDS ID #M050508; and, Dep. ID #10259417, MAS ID #0040190097.
A former underground Au-Ag-Pb-Zn-Cu mine group located on 10 unpatented claims in North-central sec. 20, T.21S., R.10E., ½ mile N or Arivaca, on private land. Owned/operated at times, or in part, by the Amado Mining Co.; Oreona Mining Co.; Alba Mines, Inc.; Vogel Mining Co.; and, the Arivaca Mining Co. of Austin, TX (1956). Other long-term owners were the Oreona Development Co.
Mineralization is spotty argentiferous and auriferous galena and other sulfides in irregular quartz veins on fractures in Laramide granitic intrusives. The fissure veins range from one to 5 feet in width, and mineralized portions are up to 2 feet wide. The ore zone is 609.6 meters long and 1.52 meters wide, strikes N60E and dips 80N to vertical. Oxidation and enrichment occur near the surface. Comanche Shale is found west of the mine, and is overturned.
Workings include shaft and tunnel operations. Length of workings is 762 meters and depth is 67.06 meters. Three main shafts following veins include the Amado shaft, 220 feet deep and vertical; the La Caruva shaft, 125 feet deep and vertical; and, the No. 3 shaft and tunnel, 50 feet deep with a tunnel 600 feet long. Main tunneling extends 2000 feet east frem the Amado shaft. Worked mainly from 1921 through 1956, producing some 1,400 tons of ore averaging about 0.5 oz. Au/T, 6 oz. Ag/T, and a trace of Cu, 4% Pb, and 1% Zn.
Select Mineral List Type
StandardDetailedGalleryStrunzChemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities5 valid minerals.
Detailed Mineral List:
| ⓘChalcopyrite Formula:CuFeS2 |
| ⓘGalena Formula:PbS |
| ⓘGalena var. Silver-bearing Galena Formula:PbS with Ag |
| ⓘHematite Formula:Fe2O3 |
| ⓘ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 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘHematite | Fe2O3 |
| 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 | ⓘHematite | Fe2O3 |
| 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: | 10109615 |
|---|
Localities in this Region
- Arizona
- Pima County
- Las Guijas & San Luis Mountains
- Arivaca Mining District (Las Guijas Mining District)
- Las Guijas Mountains
- Amado Mine group
- Las Guijas Mountains
- Arivaca Mining District (Las Guijas Mining District)
- Las Guijas & San Luis Mountains
- Pima County
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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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are© OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 byJolyon Ralph and Ida Chau.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844.doi:10.2138/am-2024-9486.
Privacy Policy -Terms & Conditions -Contact Us / DMCA issues -Report a bug/vulnerabilityCurrent server date and time: February 20, 2026 02:54:11 Page updated: July 25, 2025 03:34:13
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are© OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 byJolyon Ralph and Ida Chau.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844.doi:10.2138/am-2024-9486.
Privacy Policy -Terms & Conditions -Contact Us / DMCA issues -Report a bug/vulnerabilityCurrent server date and time: February 20, 2026 02:54:11 Page updated: July 25, 2025 03:34:13