Bear Gulch Mine, Koyuk Mining District, Nome Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Bear Gulch Mine | Mine |
| Koyuk Mining District | Mining District |
| Nome Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
65° 20' 59'' North , 161° 19' 48'' West
Latitude & Longitude (decimal):
Type:
Age:
2.588 Ma to present day
Geologic Time:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Koyuk | 342 (2017) | 47.2km |
Stream gradient approximately 100 feet (ca. 30 m) per mile.
Location: This placer mine is near the forks of Bear Gulch, an eastward-flowing, informally named, tributary of Sweepstakes Creek that drains the northeast flank of Bear Mountain. The site is in section 3, T. 2 S., R. 13 W., of the Kateel River Meridian. Cobb,1972 (MF-389), location 42.
Geology: Bedrock is Jurassic andesite tuffs and flows. Placer gold was reported to have been mined near the forks. Some platinum was also recovered from the placer (Harrington, 1919; Gault and others, 1953).
Workings: Small scale placer mining.
Age: Quaternary.
Commodities (Major): - Au, Pt
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:
| ⓘ Native Gold Formula: Au |
| ⓘ Native Platinum Formula: Pt |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Native Platinum | 1.AF.10 | Pt |
List of minerals for each chemical element
| Pt | Platinum | |
|---|---|---|
| Pt | ⓘ Native Platinum | Pt |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | CA006 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Koyukuk-Selawik DomainDomain
- Koyukuk ArcsVolcanic Arc
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