Unnamed Occurrence (ARDF - WI060; east of Wild Lake; opposite Seward Creek), Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
67° 29' 43'' North , 151° 30' 28'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is about 1.5 miles east of Wild Lake, east of the mouth of Seward Creek. It is at an elevation of about 3,450 feet at the northeast end of a small ridge, near the center of section 23, T. 31 N., R. 18 W., of the Fairbanks Meridian. The location is accurate.
Geology: This occurrence consists of oxidized and locally mineralized quartz veins in Devonian schist and phyllite (Chipp, 1972). Of three, selected samples of the veins, one contained malachite, one contained tetrahedrite, and one contained an unknown gray mineral (Chipp, 1972; Kurtak and others, 1999). The tetrahedrite-bearing sample contains 6.5 ppm gold, 13 ppm silver, 2,400 ppm copper, and 2,000 ppm antimony (Chipp, 1972; sample 138). Analyses of the other samples showed no valuable metals. No other information is available.
Alteration: Oxidation to limonite and malachite.
Commodities (Major) - Ag, Au, Cu, Sb
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.
Detailed Mineral List:
| ⓘ 'Limonite' |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Cu | Copper | |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Sb | Antimony | |
| Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
Other Databases
| Link to USGS - Alaska: | WI060 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Brooks Range DomainVolcanic Arc
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