Two Brothers Mine (Dos Hermanos Mine), Mount Benedict, Nogales Mining District (Gold Hill Mining District), Santa Cruz County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Two Brothers Mine (Dos Hermanos Mine) | Mine |
| Mount Benedict | Mountain |
| Nogales Mining District (Gold Hill Mining District) | Mining District |
| Santa Cruz County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
31° 23' 48'' North , 110° 55' 35'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Beyerville | 177 (2011) | 4.6km |
| Nogales | 20,252 (2017) | 6.3km |
| Rio Rico | 18,962 (2011) | 9.6km |
| Nogales | 212,533 (2018) | 9.9km |
| Kino Springs | 136 (2011) | 11.6km |
‡Ref.: Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 61 (Table 4).
Arizona Bureau of Mines card file Santa Cruz County.
MRDS database Dep. ID file #10026826, MRDS ID #M000431; and, Dep. ID #10210530, MAS ID #0040230087.
A former small surface and underground Au-Pb-Ag-Cu mine located in East-central sec. 29, T.23S., R.14E, 4 miles N of Nogales, on private land. Produced 1880-1915. Owned by the Old Dominion Mining & Reduction Co.
Mineralization is irregular shear veins containing spotty, largely oxidized, auriferous and argentiferous lead and minor copper mineralization in roughly banded quartz and brecciated Jurassic quartz monzonite wall rock. Associated lamprophyre and diorite dikes.
Workings include shallow shaft and tunnel operations. Worked sporadically from the mid-1800's to 1915. The production would be some 100 tons of ore averaging about 0.8 oz. Au/T, 4% Pb, 4 oz. Ag/T and minor Cu.
List of minerals for each chemical element
Other Databases
| Link to USGS MRDS: | 10026826 |
|---|
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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