Chicago Mine, Rosemont (Rosemont Camp), Helvetia-Rosemont Mining District, Pima County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Chicago Mine | Mine |
| Rosemont (Rosemont Camp) | Mining Area |
| Helvetia-Rosemont Mining District | Mining District |
| Pima County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
31° 49' 44'' North , 110° 45' 47'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Corona de Tucson | 5,675 (2011) | 15.2km |
| Sonoita | 818 (2015) | 19.4km |
| East Sahuarita | 1,622 (2006) | 20.1km |
| Green Valley | 21,391 (2011) | 21.9km |
| Sahuarita | 25,707 (2017) | 23.1km |
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 | 46km |
| Tucson Gem and Mineral Society | Tucson, Arizona | 46km |
Other/historical names associated with this locality:
Chicago prospect; Oregon Copper Mine; Coconino Mine
‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 129.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 127 (Table 4).
Arizona Bureau of Mines file data.
A Cu-Ag-Pb-Zn-Au mine located on the Chicago claim, in W 1/2, NE 1/4, sec. 36, T.18S., R.15E., 1 mile south of the Narragansett claim. Owned at times, or in part, by the Rosemont Copper Co., the Rosemont Development Co., Asarco (American Smelting And Refining Co.), and, Chilson.
Mineralization is copper carbonates, oxides, silicates, and sulfides with minor lead and zinc minerals in fault, fracture, and bedding-controlled pyrometasomatic replacement orebodies in crushed and silicated Paleozoic limestone intruded by quartz latite porphyry in thrust-faulted Paleozoic formations.
A contact between a dike of granite porphyry along which there is a fault zone of crushed material and contact-metamorphic minerals showing large fragments of limestone containing sulphides and secondary copper minerals.
Workings include a 100 foot deep shaft, tunnels, and open cuts. Rich surface ores were mined in the 1890's. Sporadic production of some 3,000 tons of ore averaging about 10% Cu and 1 oz. Ag/T, together with the Oregon Copper & Coconino Mines
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Cuprite Formula: Cu2O |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Pyrite Formula: FeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cuprite | 4.AA.10 | Cu2O |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Cuprite | Cu2O |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Cuprite | Cu2O |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS MRDS: | 10162330 |
|---|
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
USA
- Arizona
- Santa Rita MountainsMountain Range
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Chicago Mine, Rosemont, Helvetia-Rosemont Mining District, Pima County, Arizona, USA