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Ptarmigan Creek Prospect (tributary of Birch Creek), Circle Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Ptarmigan Creek Prospect (tributary of Birch Creek) | Prospect |
| Circle Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
65° 26' 23'' North , 145° 31' 8'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: Ptarmigan Creek is a tributary of Birch Creek. It flows south from Porcupine Dome and crosses the Steese Highway in the NW1/4 NE1/4 sec. 17, T. 7 N., R. 11 E.
Geology: Headwaters of Ptarmigan Creek are on the south slopes of Porcupine Dome. Bedrock underlying Ptarmigan Creek is the Upper Quartzite and Upper Schist units mapped by Wiltse and others (1995). The Upper Quartzite consists of porphyroblastic-albite-chlorite-muscovite-quartz schist, quartzites and micaceous quartzites. The Upper Schist is a mixed unit dominated by variably garnetiferous, pelitic quartz-muscovite schist, muscovite-quartz schist and chlorite-quartz-muscovite schist with distinct intervals of garnetiferous calcareous albite-porphyroblastic muscovite-chlorite schist. Sediments are said to contain large amounts of copper (Burand, 1965). Gold can be readily panned from the thin veneer of gravels on the bedrock in Ptarmigan Creek just upstream from its junction with Eagle Creek (Lampright, 1996, p. 75). Known years of activity are 1925, 1953, 1954 and 1969 through 1982 (Menzie and others, 1983, p. 51).
Workings: Known years of activity are 1925, 1953, 1954 and 1969 through 1982 (Menzie and others, 1983, p. 51).
Commodities (Major) - Au
Development Status: None
Deposit Model: Gold placer deposit (Cox and Singer, 1986; model 39a)
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
1 valid mineral.
Detailed Mineral List:
| ⓘ Native Gold Formula: Au |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
List of minerals for each chemical element
| Au | Gold | |
|---|---|---|
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | CI048 |
|---|
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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