Bear Creek Mine, Innoko Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Bear Creek 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° 34' 11'' North , 156° 7' 55'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
See also Cripple Creek (OP005).
Location: Bear Creek is a small, northeast-flowing headwater tributary to Graham Creek. The coordinates are for the approximate midpoint of mining at Bear Creek, on a bench between Bear Creek and Cripple Creek in sec. 22, T. 22 S., R. 14 E., Kateel River Meridian. Bear Creek is locality 7 of Cobb (1972 [MF 367]). The location is accurate within 1/2 mile.
Geology: The Bear Creek area is underlain by chert, argillite, and volcaniclastic rocks. The upper portion of Cripple Creek, a nearby tributary to Graham Creek, is underlain by volcanic graywacke and conglomerate. The headwaters of Cripple Creek drain a small monzonite pluton. The rocks along the lower part of Cripple Creek are chert, argillite, and volcaniclastic strata; in the upper part of the creek, these rocks are in fault contact with structurally overlying volcanic graywacke and conglomerate (Chapman and others, 1985). Mining along Bear Creek took place on a bench between Cripple and Bear creeks. Placer mining was intermittent from 1922 until 1961, and again from 1970 until at least 1991(Brooks and Capps, 1924; Smith, 1939 [B 910-A]; Smith, 1942; White and Killeen, 1953; Cobb, 1972 [MF 367]; Cobb, 1973 [OFR 76-576]; Bundtzen and others, 1990; Bundtzen and others, 1992). The average fineness of gold is 901 (Metz and Hawkins, 1981). Production from Bear Creek prior to 1961 was at least 10,412 ounces of gold and 1,150 ounces of silver (Bundtzen and others, 1987).
Workings: Placer mining was intermittent from 1922 until 1961, and again from 1970 until at least 1991(Brooks and Capps, 1924; Smith, 1939 [B 910-A]; Smith, 1942; White and Killeen, 1953; Cobb, 1972 [MF 367]; Cobb, 1973 [OFR 76-576]; Bundtzen and others, 1990; Bundtzen and others, 1992).
Production: Production from Bear Creek prior to 1961 was at least 10,412 ounces of gold and 1,150 ounces of silver (Bundtzen and others, 1987).
Commodities (Major) - Au; (Minor) - Ag
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.
Gallery:
Other Databases
| Link to USGS - Alaska: | OP003 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell-Innoko-Idono DomainDomain
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