Unnamed Occurrence (ARDF - CI074; headwaters of Independence Creek), Circle Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
65° 27' 28'' North , 145° 13' 15'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: The location is the site of sample no. 3MZ0036e, plate 1, of U.S. Geological Survey Open-File Report 84-479 (Foster and others, 1984). It is NE of Mastodon Dome on the eastern ridge above Independence Creek, SE 1/4 SW 1/4 sec. 2, T. 7 N., R. 12 E.
Geology: Galena(?), arsenopyrite(?) and gold-colored sulfides were found along the margin of a vuggy, milky-white quartz vein in brecciated silicified country rock. Samples showed 15 ppm Ag and 1,500 ppm Pb (Foster and others, 1984). Bedrock in the Independence Creek drainage is the Lower Schist unit described by Wiltse and others (1995) as a medium to dark gray and medium greenish-gray, fine- to medium-grained, commonly slightly calcareous quartz-muscovite schist, with lesser amounts of quartzose porphyroblastic albite-chlorite schist and chlorite schist. The bedrock is cut by numerous quartz veins.
Workings: Surface samples taken.
Commodities (Major) - Ag; (Minor) - Pb
Development Status: None
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:
| ⓘ Arsenopyrite ? Formula: FeAsS |
| ⓘ Galena Formula: PbS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Arsenopyrite ? | 2.EB.20 | FeAsS |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Galena | PbS |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS - Alaska: | CI074 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- North America PlatformPassive Margin
- Yukon-Tanana lower DomainDomain
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