Copper King Mine, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Copper King Mine | Mine |
| Pima Mining District | Mining District |
| Sierrita Mountains | Mountain Range |
| Pima County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
31° 53' 54'' North , 111° 3' 34'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Green Valley | 21,391 (2011) | 7.9km |
| Sahuarita | 25,707 (2017) | 11.8km |
| East Sahuarita | 1,622 (2006) | 13.3km |
| Arivaca Junction | 1,090 (2011) | 19.0km |
| Amado | 295 (2011) | 21.2km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Old Pueblo Lapidary Club | Tucson, Arizona | 38km |
| Tucson Gem and Mineral Society | Tucson, Arizona | 38km |
A former small underground Zn-Pb-Ag-Cu-Au mine located in the NW ¼ sec. 6, T.18S., R.13E., at the town of Twin Buttes and about 500 feet ESE of the old Twin Buttes railway depot on private land. Produced 1910-1942. Owned at times, or in part, by Baxter; the Twin Buttes Mining & Smelting Co.; Midland Copper Co.; and, William Foy.
The surface, from south to north, consists of cherty Naco limestone; a belt of relatively pure crystalline marble of Escabrosa aspect, 200 feet wide; a belt of bluish limestone 50 feet wide; siliceous beds, 25 feet; and cherty Naco limestone. These beds strike NW and dip from 80ºNE. to vertically. An irregular body of gray porphyry, 100 feet long by 15-25 feet wide, cuts across the SW contact of the marble.
Mineralization is irregular, lensing copper and zinc carbonate ores as replacements along fissure veins in partly garnetized Paleozoic limestone. The ore averaged about 5 feet in width along the Copper King fissure. Several mineralized NE fissures, dipping from 65º SE to vertically are visible in the hanging wall of the orebody. Commercial mineralization was apparently limited to the marble.
The Copper King fissure trends west to northwesterly and dips about 75ºS. It is traceable for a length of some 350 feet, becoming tight and indistinct on the ends. On the east, near the bluish limestone, it apparently forks and is marked by a mass of garnet. Overall, the ore body is 106.68 meters long, 1.52 meters wide and 68.58 meters deep, striking WNW and dipping 75SW.
Workings include an inclined shaft that reached a vertical depth of 335 feet (102.11 meters deep). Possibly some 100 tons of 12% Cu with 2 oz. Ag/t ore were produced in the early 1900's as well as a body of oxidized ore in the footwall that yielded 2,183 tons of 27-34% Zn in 1912. Worked for several years prior to 1914. Production was valued at $150,000 and consisted mainly of carbonate ore that averaged about 8 Cu and 2 oz. Ag/T.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Unclassified | |||
|---|---|---|---|
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Si | Silicon | |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
Other Databases
| Link to USGS MRDS: | 10026756 |
|---|
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
- Mazatzal DomainDomain
- Southern Basin and RangeWide Rift
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0040190175
