Peer and Peerless group (Quijotoa Mine), Ben Nevis Mountain, Quijotoa Mining District, Quijotoa Mountains, Pima County, Arizona, USAi
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Latitude & Longitude (WGS84):
32° 4' 14'' North , 112° 8' 47'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Maish Vaya | 158 (2011) | 10.9km |
| Pisinemo | 321 (2011) | 16.8km |
| Gu Oidak | 188 (2011) | 19.2km |
| Wahak Hotrontk | 114 (2011) | 24.1km |
| Santa Rosa | 628 (2011) | 29.8km |
A former small surface and underground Ag-Au-Baryte-Gypsum mine group located in the SW¼ sec. 35, T15S, R2E (protracted), 6½ miles SSW of the Quijotoa Trading Post. Produced 1880-1892.
Mineralization is free gold with silver chlorides in oxidized quartz-calcite-barite-hematite pockets in Laramide rhyolite volcanics along a fault zone. The silver ore has baryte-lined fissure cavities-the largest is approximately 200 feet long, 20 feet high, and 20 feet wide.
Baryte was deposited by meteoric waters.
Workings include numerous small shafts, pits, and adits. Worked out in a short period in the 1880's. Production is estimated at some 50 or more tons of high-grade Au-Ag ore. Ag mine workings, no baryte production reported.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Baryte Formula: BaSO4 Description: blades form matrix for galena crystals. References: |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chlorargyrite Formula: AgCl |
| ⓘ Galena Formula: PbS Habit: cubo-octahedral References: |
| ⓘ Gold Formula: Au Description: As free lode gold. |
| ⓘ Gypsum Formula: CaSO4 · 2H2O |
| ⓘ Gypsum var. Selenite Formula: CaSO4 · 2H2O |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Galena | 2.CD.10 | PbS |
| Group 3 - Halides | |||
| ⓘ | Chlorargyrite | 3.AA.15 | AgCl |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
| ⓘ | var. Selenite | 7.CD.40 | CaSO4 · 2H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| H | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Galena | PbS |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| S | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| Cl | Chlorine | |
| Cl | ⓘ Chlorargyrite | AgCl |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Ca | ⓘ Gypsum var. Selenite | CaSO4 · 2H2O |
| Fe | Iron | |
| Fe | ⓘ Hematite | Fe2O3 |
| Ag | Silver | |
| Ag | ⓘ Chlorargyrite | AgCl |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10026738 |
|---|
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
USA
- Arizona
- ⭔Tohono O'odham ReservationReservation
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Peer and Peerless group, Ben Nevis Mountain, Quijotoa Mining District, Quijotoa Mountains, Pima County, Arizona, USA