Alder Creek Mine, Circle Mining District, Yukon-Koyukuk Census Area, Alaska, USAi

Regional Level Types
Alder Creek Mine	Mine
Circle Mining District	Mining District
Yukon-Koyukuk Census Area	Census Area
Alaska	State
USA	Country

See also Webber Creek (CY037). This site lies within the Yukon-Charley Rivers National Preserve.
Location: Alder Creek is a northwest-flowing tributary of Webber Creek, which drains into the Yukon River. Alder Creek is approximately 6 miles long. The exact location of placer mining on Alder Creek is unknown. The latitude and longitude coordinates correspond to an arbitrarily chosen point near the midpoint of the creek, in section 19, T. 5 N., R. 20 E., of the Fairbanks Meridian. The location is accurate to within 3 miles.
Geology: There has been historic placer gold mining on Alder Creek, and the creek shows evidence of worked ground (Mertie, 1942). The headwaters and upper portion of Alder Creek are underlain by Cretaceous to Tertiary conglomerate and other sedimentary rocks, but the creek then crosses a high-angle normal fault, and its lower half is underlain by Paleozoic to Precambrian metamorphic rocks (Dover and Miyaoka, 1988). The gold-bearing gravels at other placer mines within the quadrangle appear to be derived from the Cretaceous to Tertiary sedimentary rocks, and this may be the case with Alder Creek. This interpretation seems especially likely since Webber Creek, which Alder Creek joins, does not contain much, if any, gold (Cobb, 1976 [OFR 76-632]).
Workings: Alder Creek is a site of historic placer exploration with possible minor production.
Age: Quaternary.
Production: There has not been much, if any, placer gold produced from Alder Creek (Mertie, 1942).

Commodities (Major) - Au
Development Status: Yes
Deposit Model: Placer Au (Cox and Singer, 1986; model 39a).

Other Databases

Link to USGS - Alaska:	CY001

Other Regions, Features and Areas containing this locality

References