Bedrock Gulch Mine, Innoko Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Bedrock Gulch Mine | Mine |
| Innoko Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 2' 43'' North , 156° 37' 4'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: Bedrock Gulch, about 7.5 miles south-southeast of Ophir, is a short, north tributary to Dollar Creek, which is an east tributary to Beaver Creek. Bedrock Gulch is not named on U.S. Geological Survey topographic maps; most of it is in sec. 20, T. 28 S., R. 12 E., Kateel River Meridian. This site is location 10 of Cobb (1972 [MF 367]). The location is accurate within 1/2 mile.
Geology: The area of Bedrock Gulch is underlain by undivided clastic rocks (Chapman and others, 1987). The thickness of pay gravel in the 1950's was 3-4 feet, and it was covered by 7 to 8 feet of muck and overburden. Saunders (1960) noted that Mr. Lindquist, the operator, expected to finish placer mining that area in 1959 and then move 3 or 4 miles downstream and continue mining. Smith (1937) reports active non-dredge mining along Bedrock Gulch in 1935. The next report of mining is in 1959 (Saunders, 1960).
Workings: Smith (1937) reports non-dredge mining along Bedrock Gulch in 1935. The next mention of mining is in 1959, when Saunders (1960) reports that Hjalmar Lindquist was mining the upper portion of the gulch with a TD-14 tractor. Mr. Lindquist expected to finish mining that area in 1959 and then move 3 or 4 miles downstream and continue mining.
Age: Quaternary.
Commodities (Major) - Au
Development Status: Yes; small
Deposit Model: Placer Au (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: | OP028 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell buried DomainDomain
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