Willaha group (Copper No. 1; Doty group), Willaha, Francis Mining District, Coconino County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Willaha group (Copper No. 1; Doty group) | Mine |
| Willaha | Unincorporated Area |
| Francis Mining District | Mining District |
| Coconino County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
35° 45' 54'' North , 112° 15' 2'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Valle | 832 (2011) | 16.0km |
| Tusayan | 567 (2017) | 25.7km |
| Grand Canyon Village | 1,550 (2006) | 32.5km |
| Grand Canyon | 1,460 (2018) | 33.7km |
| Supai | 208 (2017) | 65.6km |
Other/historical names associated with this locality:
Copper #1
A former Cu-Fe-U occurrence/mine located in secs. 34 & 35, T28N, R1E, G&SRM, 1.2 km (0.8 mile) ENE of Willaha. Scarborough states that Copper No. 1 is located in the NW¼SE¼ sec. 35 and the Willaha group is in sec. 26.
Mineralization includes primary and secondary copper minerals in lenses and vugs hosted in the Late Permian Kaibab Limestone. May be controlled by fractures and undulations. A few small veins and vugs stained with iron oxide or coated with hematite contain U. Radioactive material occurs in a 2 foot zone in, and immediately underlying 6 inches of malachite mineralization in sandy Kaibab Limestone, with chert nodules along bedding planes. Halos of azurite and malachite surround chalcocite. Radioactive reading of 0.34 mr/hour. Local rocks include Permian sedimentary rocks.
Workings include surface openings with an overall length of 15.24 meters. Old Cu workings date to the early 1900's. Property contains several (5) prospect pits and trenches with a maximum depth of 15 feet. The pit is 50 x 3 x 3 feet deep.
Production of Cu up to 1954 was limited. Production from Copper #1 or Willaha group, or both, was 29 tons of ore @ 0.10% U3O8; 0.02% V2O5; 9.4% CaCO3 (1956), illegally shipped from pit on the Copper #1 under the name of Doty group.
Mineralization includes primary and secondary copper minerals in lenses and vugs hosted in the Late Permian Kaibab Limestone. May be controlled by fractures and undulations. A few small veins and vugs stained with iron oxide or coated with hematite contain U. Radioactive material occurs in a 2 foot zone in, and immediately underlying 6 inches of malachite mineralization in sandy Kaibab Limestone, with chert nodules along bedding planes. Halos of azurite and malachite surround chalcocite. Radioactive reading of 0.34 mr/hour. Local rocks include Permian sedimentary rocks.
Workings include surface openings with an overall length of 15.24 meters. Old Cu workings date to the early 1900's. Property contains several (5) prospect pits and trenches with a maximum depth of 15 feet. The pit is 50 x 3 x 3 feet deep.
Production of Cu up to 1954 was limited. Production from Copper #1 or Willaha group, or both, was 29 tons of ore @ 0.10% U3O8; 0.02% V2O5; 9.4% CaCO3 (1956), illegally shipped from pit on the Copper #1 under the name of Doty group.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
6 valid minerals.
Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Bornite Formula: Cu5FeS4 |
| ⓘ Chalcocite Formula: Cu2S |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| ⓘ Covellite Formula: CuS |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Covellite | 2.CA.05a | CuS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 9 - Silicates | |||
| ⓘ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | Silicon | |
| Si | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| S | Sulfur | |
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Chalcocite | Cu2S |
| S | ⓘ Covellite | CuS |
| Fe | Iron | |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Chalcocite | Cu2S |
| Cu | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | ⓘ Covellite | CuS |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS MRDS: | 10027345 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Chugar Group Area BasinBasin
- Colorado PlateauShield
- Great Plains DomainDomain
USA
- Colorado PlateauPlateau
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