Copper Butte Mine (Copper Buttes Copper Mines), Pima Mining District (Olive Mining District; Mineral Hill Mining District; Twin Buttes Mining District), Sierrita Mountains, Pima Co., Arizona, USAi
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Key
Latitude & Longitude (WGS84):
31° 53' 42'' North , 111° 3' 56'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Green Valley | 21,391 (2011) | 8.2km |
| Sahuarita | 25,707 (2017) | 12.5km |
| East Sahuarita | 1,622 (2006) | 14.0km |
| Arivaca Junction | 1,090 (2011) | 18.6km |
| Amado | 295 (2011) | 20.8km |
Ref.: Cummings, J.B., and Romslo, T.M. (1950) Investigation of Twin Buttes copper mines, Pima County, Ariz.: U.S. Bureau of Mines Report of Investigations R.I. 4732, 32 p.
Cooper, J.R. (1960) Some geologic features of the Pima mining district, Pima County, Arizona: U.S. Geological Survey Bulletin 1112-C, p. 63-103, 1 sheet, scale 1:31,680.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 133 (Table 4).
USGS Twin Buttes Quadrangle topo map.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10108966, MRDS ID #M000091; and, Dep,. ID #10234806, MAS ID #0040190171.
A former small underground Cu-Ag mine located in the SE ¼ sec. 36, T.17S., R.12E., ¼ mile west of the town of Twin Buttes, on private land. Produced 1918-1935. Owned/operated at times, or in part, by Twin Buttes Mining & Smelting Co.; Bush & Baxter; Lee S. Wood; Jesus Oritz; and, Foy.
Mineralization is a small zone of chalcopyrite in fractured, garnetized, Paleozoic limestone near, or at, a fault contact with Precambrian granite at the border of the Minnie claim. Other slightly mineralized, garnetiferous zones occur eastward along the limestone-granite fault contact.
Local structures include a NW-trending fault just to the north of the mine.
Workings include shaft operations from the Minnie Mine and Butte shaft. Possibly some 200 tons of ore, averaging about 3% Cu were produced in 1929.
Select Mineral List Type
Standard Detailed Strunz Dana Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
1 valid mineral.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 133 (Table 4); Cummings & Romalo (1950); Arizona Bureau of Mines file data. |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 133 (Table 4); Cummings & Romalo (1950); Arizona Bureau of Mines file data. |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals arranged by Dana 8th Edition classification
| Group 2 - SULFIDES | |||
|---|---|---|---|
| AmBnXp, with (m+n):p = 1:1 | |||
| ⓘ | Chalcopyrite | 2.9.1.1 | CuFeS2 |
| Unclassified Minerals, Mixtures, etc. | |||
| ⓘ | '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 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| USGS MRDS Record: | 10108966 |
|---|
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