Border Mine group (Tunquepata Mine; Tunquita Mine), 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° 26' 52'' North , 111° 25' 10'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Aduana del Sásabe | 1,295 (2018) | 12.3km |
| Arivaca | 695 (2011) | 16.4km |
| Tumacacori-Carmen | 393 (2015) | 38.2km |
| Sáric | 892 (2018) | 38.5km |
| San Miguel | 197 (2011) | 38.9km |
Ref.: Yeend, Warren (1972), Field Examination, Border Mine group.
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).
Niemuth, N.J. (1987), Arizona Mineral Development 1984-1986, Arizona Department of Mines & Mineral Resources Directory 29, 46 pp.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10039609, MRDS ID #M050487; and, Dep. ID #10234627, MAS ID #0040190136.
A former small underground Au-Ag-W-Cu-Pb mine group located in the SE ¼ sec. 4 & the NE ¼ sec. 9, T.23S., R.9E., on the US-Mexican border, 9 miles WSW of Oro Blanco. Produced 1933-1942. Owned at times, or in part, by Williams; Aver; Finlyson; Lowell; and, Cummings. Operated by the Fischer Watt Mining Co., Kingman, AZ (1986).
Mineralization is a weathered and oxidized quartz vein with free gold and silver chlorides (?) near the surface in a fissure zone in Cretaceous andesite near a Laramide granitic intrusive. Alteration included pyrite-chalcopyrite gossan and silica.
Workings include shallow openings to 30.49 meters deep, including a shaft, trench and open cut. Mr. Fischer Watt did geologic evaluation and geochemical sampling at this site 1984-1986. Intermittent production occurred from 1930 to 1941. Some 195 tons of ore were shipped averaging about 0.9 oz. Au/T, some Pb and Cu, and about 50 tons of tungsten ore in 1939.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Chlorargyrite ? Formula: AgCl Description: Near the surface. |
| ⓘ Native Gold Formula: Au Description: As free lode gold. |
| ⓘ Pyrite Formula: FeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 3 - Halides | |||
| ⓘ | Chlorargyrite ? | 3.AA.15 | AgCl |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| Cl | Chlorine | |
| Cl | ⓘ Chlorargyrite | AgCl |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Ag | Silver | |
| Ag | ⓘ Chlorargyrite | AgCl |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10039609 |
|---|
Other Regions, Features and Areas containing this locality
Mexico
- Sierra Madre OccidentalMountain Range
North AmericaContinent
- Sonoran DesertDesert
North America PlateTectonic Plate
- Southern Basin and RangeWide Rift
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