Slisco Bench Mine, Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Slisco Bench 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° 30' 37'' North , 150° 6' 39'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
See also Hammond River (WI103).
Location: The Slisco Bench placer mine is located along the west side of Hammond River about 0.2 mile southwest of the mouth of Vermont Creek. The mine is 0.3 mile east-southeast of the center of section 13, T. 31 N., R. 11 W., of the Fairbanks Meridian. It marks the north end of a reported buried channel that may extend a mile to the south. The location is accurate.
Geology: The Slisco Bench deposit is one of a number of bench placers in the valley of the Hammond River. Silverado Mines, the current (2000) owner of most of the property in the vicinity, reports that the Slisco Bench was discovered in the late 1920's and that a small amount of mining was done in the years between the discovery and 1935. Additional mining also occurred in the 1960's. Drilling by Silverado in 1995 intersected gold-bearing gravel in a buried channel beneath 60 to 200 feet of frozen gravel (Silverado Mines website: www.silverado.com). Silverado speculates that the Slisco Bench channel may extend from its shallow north end just south of Vermont Creek, as much as 5000 feet to the south; however, much of this interval is unexplored.
Workings: Small-scale mining occurred in the late-1920's, possibly in the early 1930's, and again in the 1960's. Silverado reports that 63 exploratory drill holes were drilled in 1995 (www.silverado.com).
Age: Quaternary.
Reserves: In a Silverado Mines press release, dated Oct. 23, 1998, the Slisco Bench placer was said to have a gold resource of 29,715 ounces in all classifications. Current (2000) information from Silverado's website indicates the reserves (of all classifications) at the Slisco Bench placer, are 31,099 ounces of gold. This figure does not include an inferred geologic potential for an additional 50,000 to 150,000 ounces of gold (Silverado Gold Mines, Ltd. website, www.silverado.com).
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: | WI031 |
|---|
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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