Oro Mine (El Oro Mine; Golden Eagle group; Nil Desperandum Mine), Bartlett Mountain, Ruby, Oro Blanco Mining District (Ruby Mining District), Oro Blanco Mountains, Santa Cruz County, Arizona, USAi
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Latitude & Longitude (WGS84):
31° 25' 21'' North , 111° 16' 58'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Arivaca | 695 (2011) | 17.6km |
| Aduana del Sásabe | 1,295 (2018) | 25.5km |
| Tumacacori-Carmen | 393 (2015) | 28.3km |
| Rio Rico | 18,962 (2011) | 29.5km |
| Tubac | 1,191 (2011) | 30.8km |
‡Ref.: Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 65 (Table 4).
Wilson, E.D., Cunningham, J.B., and Butler, G.M. (1934), Arizona Lode Gold Mines and Gold Mining (revised 1967), Arizona Bureau of Mines Bull. 137: 188.
Knight, L.H., Jr. (1970) Structure and mineralization of the Oro Blanco mining district, Santa Cruz County, Arizona: Tucson, University of Arizona, Ph.D. dissertation, 172 p., 7 sheets, scales 1:1,200, 1:6,000, 1:16,000, 1:24,000, 1:60,000, 1:62,500, and 1:358,000.
Yeend, Warren (1973).
Report of the Region Contiguous to the Montana Mine.
U.S. Bureau of Mines card file.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10039553, MRDS ID #M050267; and, Dep. ID #10186259, MAS ID #0040230053.
A former small underground Au-Ag-Pb-Cu-Zn mine located in West-central sec. 13, T.23S., R.10E, 4 miles S of Ruby, on private land. Started 1912. Owned at times, or in part, by Williams; and, Foltz.
Mineralization is irregular and lensing quartz fissure veins containing spotty base metal sulfides, oxidized and supergene enriched in silver and gold. The wall rock is Jurassic volcanic tuff. The host rock units are the Cobre Ridge Tuff and the Sidewinder Quartz Monzonite. The tuff is welded and non-welded. Ore control was the contact between quartz latite tuff and a quartz monzonite dike. Ore concentration was oxidation and supergene enrichment. Alteration is minor. Local structures include NW-trending fault zones.
Workings include shaft operations. Prospected and worked in the 1890's and intermittently into the 1900's. Produced some 100 tons of ore averaging about 15 oz. Ag/T, 0.5 oz. Au/T and minor Cu & Pb.
Knight's map shows only "El Oro" - mine - same as on topo sheet - but this is the same mine as patented "Oro" Mine.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
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 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10039553 |
|---|
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
- Southern Basin and RangeWide Rift
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