Swift Creek; Swift Gulch Mine, Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Swift Creek; Swift Gulch 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° 29' 24'' North , 150° 6' 39'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: Swift Creek is a northeast-flowing tributary of the Hammond River that begins on the northeast flank of Smith Creek Dome. The placer deposits extend from the mouth of Swift Creek about a mile upstream; the workings continue a short distance up a small, left-limit gully that joins Swift Creek about 0.8 mile above its mouth. The location is accurate.
Geology: Gold was produced from Swift Creek as early as 1901(Schrader, 1904). The richest gold placer deposits were near the mouth, although the mines produced only wages and small amounts of coarse gold (Maddren, 1913). The modern stream bed has been mined as well as a high channel that coalesced with an eroded high channel of the Hammond River. Some of the gold had a white coating similar to that found on the gold from Smith Creek (WI116). Mosier and Lewis (1986) report that the gold was 880 fine from the high channel and 924 fine from the modern channel. Of three panned-concentrate samples from Swift Creek, only one, near the mouth, showed any visible gold (Kurtak and others, 1999). The rocks in the area are predominantly chlorite-mica schist, quartz-mica schist, and phyllite (Eden, 2000). Swift Creek drains mineralized areas on Smith Creek Dome (WI107, WI110, and WI127).
Workings: Swift Creek was mined by hand methods between 1901 and 1927. Gold production in later years may have been included with reports from the Hammond River (WI103).
Age: Quaternary.
Production: Maddren (1913) reports gold production of $7,200 (approximately 380 ounces) between 1902 and 1909. Reed (1938) noted that the high channel had been worked out several years before his visit.
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: | WI102 |
|---|
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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