Brownell Mine (Century-Chief Mine; Index group; Dandy Mine), Brownell Mountains, Quijotoa Mining District, Quijotoa Mountains, Pima County, Arizona, USAi
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Latitude & Longitude (WGS84):
32° 14' 53'' North , 112° 8' 18'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Maish Vaya | 158 (2011) | 9.1km |
| Santa Rosa | 628 (2011) | 12.4km |
| Anegam | 151 (2011) | 17.1km |
| Wahak Hotrontk | 114 (2011) | 22.6km |
| Pisinemo | 321 (2011) | 29.0km |
‡Ref.: Stevens, J.H. (1906) The Copper Handbook, Vol. IV.
Stevens, P. (1911) The Copper Handbook: Vol. X.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 140 (Table 4).
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 11 (Table 1).
U.S. Bureau of Mines card file.
USGS Quijotoa Mts Quadrangle topo map.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10026739, MRDS ID #M000023; and, Dep. ID #10113580, MAS ID #0040190138.
A former small underground Ag-Cu-Au mine located in the center of sec. 35, T.13S., R.2E. (Quijotoa Mts 15 minute topo map) on at least 8 claims, all with workings, 6 miles NNW of the Quijotoa Trading Post. Owned at times, or in part, by Childs; Brownell Arizona Mining & Smelting Co.; and the Producer Mining & Smelting Co.
Mineralization is irregular and spotty copper oxides and minor sulfides, with hematite and pyrite, in fractured and altered Laramide sediments and volcanics, intruded by igneous dikes and plugs. Secondary enrichment by oxidation and silicification.
Workings include shaft operations to 70.1 meters deep. There were 4 shafts at 230 feet, 45 feet, 100 feet, and 40 feet deep, and various shallow shafts and open cuts. Sporadic production occurred in the early 1900's and 1920's of some 500 or more tons of ore averaging about 3% Cu and 8 oz. Ag/T.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | 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 | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Pyrite | FeS2 |
Other Databases
| Link to USGS MRDS: | 10026739 |
|---|
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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