Unnamed Occurrence (ARDF - ID071; ridge north of Camelback Mountain), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
62° 33' 31'' North , 157° 20' 49'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is at an elevation of about 2,400 feet, about 1.1 mile north of Camelback Mountain. It is about 0.1 mile southeast of the center of section 33, T. 29 N., R. 44 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence is along a faulted contact between monzonite of the Camelback Mountain intrusion and sandstone and shale of the Upper Cretaceous, Kuskokwim Group (Miller and Bundtzen, 1994; Miller, Bundtzen and Gray, 2004). The olivine-biotite monzonite on Camelback Mountain has been dated at 73.2 Ma (Bundtzen, Laird, and Lockwood, 1988). The mineralized zone contains quartz, pyrite, a gray sulfosalt, possibly tennantite, and oxidation minerals after the sulfides. Grab samples contain up to 200 parts per billion (ppb) gold, 2,900 ppb silver, 210 parts per million (ppm) copper, 349 ppm zinc, 127 ppm arsenic, and 3,000 ppb mercury (Bundtzen, Laird, and Lockwood, 1988; McGimsey and others, 1988).
Workings: The occurrence was sampled by Alaska Division of Geological and Geophysical Surveys and the U.S. Geological Survey in the 1980s (Bundtzen, Laird, and Lockwood, 1988; McGimsey and others, 1988).
Age: Unknown; the Camelback Mountain intrusion is 73.2 Ma (Bundtzen, Laird, and Lockwood, 1988).
Alteration: None identified.
Commodities (Major) - Ag, Au; (Minor) - As, Cu, Hg, Zn
Development Status: None
Deposit Model: Polymetallic vein (Cox and Singer, 1986; model 22c).
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
2 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
Other Databases
| Link to USGS - Alaska: | ID071 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell buried DomainDomain
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