Columbia Mine group, Cababi Mining District (Comobabi Mining District), Comobabi Mountains, Pima County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Columbia Mine group | Group of Mines |
| Cababi Mining District (Comobabi Mining District) | Mining District |
| Comobabi Mountains | Mountain Range |
| Pima County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
32° 3' 29'' North , 111° 47' 13'' West
Latitude & Longitude (decimal):
Type:
Group of Mines
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Ali Chukson | 132 (2011) | 16.1km |
| Sells | 2,495 (2011) | 18.5km |
| Topawa | 299 (2011) | 27.4km |
| Gu Oidak | 188 (2011) | 28.5km |
| Cowlic | 135 (2011) | 33.6km |
‡Ref.: Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 110 (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).
Arizona Bureau of Mines files data.
MRDS database Dep. ID file #10108976, MRDS ID #M000688.
A former small underground Cu-Ag-Au mine group located in South-central sec. 1 (12 ?), T.16S., R.5E. (protracted)(Comobabi 7.5 minute topo map), at Comobabi. Produced 1907. Owned at times, or in part, by Weldeman; and the Papago Copper Co.
Mineralization is spotty copper carbonates and chalcocite in an irregular quartz vein along a fissure zone in Laramide granitic rocks. Minor cinnabar is present. Gold the size of mustard seed to 0.15 oz was common; several nuggets of 0.73 oz were recovered. The source of the gold is believed to be tourmaline-quartz veins in Precambrian rock.
Workings include tunnels. A relatively small tonnage of ore averaging about 0.1 oz. Au/T, 29 oz. Ag/T, and 19% Cu, were produced in 1907.
Placers are found in gulches that dissect the pediment slope on the SW flank of the Sierra Prieta and in the gravel-floored plain between this pediment and Skull Valley. The richest placers are on the gravel-floored plain west and south of Copper Basin (T13N, R4W).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcocite Formula: Cu2S |
| ⓘ Cinnabar Formula: HgS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
| ⓘ | Cinnabar | 2.CD.15a | HgS |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcocite | Cu2S |
| S | ⓘ Cinnabar | HgS |
| Cu | Copper | |
| Cu | ⓘ Chalcocite | Cu2S |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
Other Databases
| Link to USGS MRDS: | 10108976 |
|---|
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
USA
- Arizona
- ⭔Tohono O'odham ReservationReservation
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