National Mine (National Consolidated Mine; Erin Mine), Canada de la Paloma, Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USAi
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Latitude & Longitude (WGS84):
31° 24' 33'' North , 110° 46' 54'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Kino Springs | 136 (2011) | 5.8km |
| Beyerville | 177 (2011) | 9.4km |
| Patagonia | 890 (2017) | 14.7km |
| Francisco Miguel Cárdenas Valdez (Mascareñas) | 541 (2014) | 15.0km |
| Nogales | 20,252 (2017) | 16.4km |
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 |
|---|---|---|
| Huachuca Mineral and Gem Club | Sierra Vista, Arizona | 48km |
‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 310-311.
Simons, F.S. (1974) Geologic map and sections of the Nogales and Lochiel quadrangles, Santa Cruz County, Arizona: U.S. Geological Survey Miscellaneous Investigations Series Map I-762, 9 p., 1 sheet, scale 1:48,000.
Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 81 (Table 4).
U.S. Bureau of Mines - Arizona Bureau of Geology and Mineral Technology production file data.
U.S. Bureau of Mines file data-cluster #22, National Mine.
Arizona Bureau of Mines file data.
U.S. Bureau of Mines Coronado National Forest Study.
MRDS database Dep. ID file #10048327, MRDS ID #M899905; and, Dep. ID #10208124, MAS ID #0040230297.
A former small underground Cu-Ag-Pb-Au-Mo-Zn mine located in the center of sec. 23, T.23S., R.15E. (protracted), 1¾ miles SW of the O'Mara Mine, on the north bank of Canada de la Paloma, at an elevation of about 4,500 feet, and 4 miles E of the Nogales International Airport. Discovered 1899 by George Gross. Produced 1906-1915. Owned by Mr. George Gross, National Consolidated Mining Co. (1906). Operated by the National Consolidated Mining Co. (1906).
Mineralization is E-W-trending quartz-chalcopyrite-pyrite and quartz-argentiferous galena veins in brecciated Jurassic porphyritic granite along a strong fault zone. Granite intrudes Precambrian metamorphic and igneous hornblende-rich rocks. Ore concentration was supergene enrichment aong vein in the contact zone. The best copper ore was at depth. There is some oxidation and supergene enrichment. Granite porphyry is altered near the vein.
The vein dips 70ºS. and is associated with the granite porphyry contact.
The National Mine is at the N end of a series of properties comprised in a belt about 1.0 mile wide which extends southward from Paloma Canyon to Providencia Canyon for a distance of about 2.5 miles, and is referred to as the Gross belt. The Gross belt and foothills are separated from the steep slopes of the range by a piedmont-like valley along which the Piedmont Fault runs. The fault extends northward for 6 miles.
Deposits in the region are mainly Pb-Ag quartzitic veins which strike E-W at about right angles to the axis of the range. Tectonic elements include the N-S-trending Piedmont Fault and the Patagonia Range uplifted on the east.
Workings include a 200 foot vertical shaft which contains about 400 feet of drifts. Mined from 1906 through 1915, producing some 150 tons of ore averaging about 6.5% Cu, 21 oz. Ag/T, 1.1% Pb, and 0.4 oz. Au/T.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ Galena var. Silver-bearing Galena Formula: PbS with Ag |
| ⓘ 'Limonite' |
| ⓘ Pyrite Formula: FeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | var. Silver-bearing Galena | 2.CD.10 | PbS with Ag |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Ag | Silver | |
| Ag | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
| Pb | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
Other Databases
| Link to USGS MRDS: | 10048327 |
|---|
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
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