Minnie Mine (Venus group; Arizona Buttes group), Pima Mining District, Sierrita Mountains, Pima County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Minnie Mine (Venus group; Arizona Buttes group) | 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' 57'' North , 111° 4' 9'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Green Valley | 21,391 (2011) | 8.7km |
| Sahuarita | 25,707 (2017) | 12.5km |
| East Sahuarita | 1,622 (2006) | 14.1km |
| Arivaca Junction | 1,090 (2011) | 19.1km |
| Amado | 295 (2011) | 21.3km |
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 |
‡Ref.: Ransome, F.L. (1922) Ore deposits of the Sierrita Mountains, Pima County, Arizona, in Contributions to Economic Geology (Short Papers and Preliminary Reports), 1921 - Part I.--Metals and Nonmetals except Fuels: U.S. Geological Survey Bulletin 725J: 425-426.
Brown, R.L. (1926) Geology and ore deposits of the Twin Buttes district: Tucson, University of Arizona, M.S. thesis, 40 p.
Houser, F.N. (1949) Geology of the Contention mine area, Twin Buttes, Arizona: Tucson, University of Arizona, M.S. thesis, 61 p.
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.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 136 (Table 4).
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 12 (Table 1).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 242.
USGS Twin Buttes Quadrangle topo map.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10039586, MRDS ID #M050376; and, Dep. ID #10259415, MAS ID #0040190316.
A former small underground Cu-Ag-Au mine located in South-central sec. 36, T.17S., R.12E. (Twin Buttes 15 minute topo map), ¾ mile SW of Twin Buttes. Produced 1900-1929. Owned at times, or in part, by E.G. Bush & J.C. Baxter Mining Co.; A. S. & R. Co.; and the Buttes Copper Co.
Mineralization is copper carbonate above and sulfides below in irregular, pyrometasomatic orebodies in Paleozoic limestone and bordering quartzite along a fault contact with Precambrian granite. The fault strikes ENE along a contact with Precambrian granite. Some post-metallization faulting. Shaly limestone was more easily replaced than "pure" limestone.
Workings include shaft operations to 76.2 meters deep. Worked sporadically from the early 1900's to 1929. Produced some 63,000 tons of ore averaging about 6.5% Cu, 1.5 oz. Ag/T and minor Au. Total production has been $1,282,000 (period values).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Gypsum Formula: CaSO4 · 2H2O |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| O | Oxygen | |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| Ca | Calcium | |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS MRDS: | 10039586 |
|---|
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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