Koyana Creek Mine, Council Mining District, Nome Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Koyana Creek Mine | Mine |
| Council Mining District | Mining District |
| Nome Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 34' 15'' North , 163° 40' 1'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| White Mountain | 196 (2017) | 17.5km |
Location: Koyana Creek is a small drainage that flows south to Norton Sound, 2.6 miles east of Bluff. This is locality 112 of Cobb (1972, MF 445; 1978, OF 78-181).
Geology: Small-scale placer mining took place on Koyana Creek in the early part of the 1900's (Collier, 1908) and between 1928 and 1930 (Cobb, 1978, OF 78-181). The placer deposits were shallow and apparently low grade. Mulligan (1971) estimates that less than 100 ounces were produced. Cinnabar was recovered in the placer concentrates (Cathcart, 1922). The Koyana Creek area is better known for the lode gold prospects here (ARDF SO136) than for placer mining. Bedrock in the area is a lower Paleozoic metasedimentary sequence that includes marble and schist (Till and others, 1986).
Workings: Small open-cut placer pits are present. Most reported exploration activity in the area was focused on lode gold deposits (ARDF SO136).
Age: Quaternary; the placer deposits here are at low enough elevation (50 to 100 feet) to have been influenced by Quaternary sea level fluctuations.
Commodities (Major) - Au; (Minor) - Hg
Development Status: Yes; small
Deposit Model: Placer Au-PGE (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
2 valid minerals.
Detailed Mineral List:
| ⓘ Cinnabar Formula: HgS |
| ⓘ Native Gold Formula: Au |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Cinnabar | 2.CD.15a | HgS |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Cinnabar | HgS |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
Other Databases
| Link to USGS - Alaska: | SO004 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Brooks-Seward DomainDomain
- Nome ComplexAccretionary Complex
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