Garnet Creek Mine, Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Garnet Creek Mine | Mine |
| Koyukuk Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
67° 33' 36'' North , 149° 23' 23'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Gold fineness reported to be 872.
Location: Garnet Creek is a north-flowing tributary to the Bettles River. It joins the Bettles River approximately 4 miles north-northeast of Big Lake (site on Bob Johnson Lake). The reference point is at about the midpoint of mining activity that extended from the mouth to the forks (sec. 32, T. 32 N., R. 8 W., of the Fairbanks Meridian). The area mined is probably along the creek within about one mile of the reference point. The location is accurate within a 1-mile radius.
Geology: Garnet Creek is one of several tributaries to the Bettles River in which placer gold has been reported. The gold is in the present channel of the creek from the mouth to the forks, mostly on schist bedrock, but also in the lower few feet of the gravel (Reed, 1938). The gravel is coarse and waterworn, with many large boulders. The gravel is about 8 feet thick near the mouth of the creek and thins to 1 to 3 feet thick 1/2 mile from the mouth. Ground near the mouth of the creek was mined in 1937 and said to run $0.77 per square foot of bedrock (0.022 oz Au) (Reed, 1938). The gold was fairly fine, with a few nuggets. Reed (1938) reported the presence of a high channel, but it had not been prospected to any extent at that time. Reed (1938) described the bedrock in Garnet Creek as schist. Dillon (1996) mapped Ordovician black phyllite and marble near the mouth and Ordovician to Cambrian(?) quartz-feldspar and calcareous schists farther upstream.
Workings: Surface mining reported in 1937. Claims were staked in 1959.
Age: Quaternary.
Production: Production from 1900 to 1909 was reported to yield $7 to $9 per man-day and totaled $1,000 (Maddren, 1913).
Commodities (Major) - Au
Development Status: Yes
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: | CH071 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Brooks Range DomainVolcanic Arc
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