Conglomerate Creek Occurrence, Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi

Regional Level Types
Conglomerate Creek Occurrence	Occurrence
Koyukuk Mining District	Mining District
Yukon-Koyukuk Census Area	Census Area
Alaska	State
USA	Country

Bureau of Land Management lists the locality as Cinco Mining (U. S. Bureau of Mines, 1998; Kurtak and others, 1999).
Location: Conglomerate Creek is a southeast-flowing tributary to Glacier River. Its mouth is approximately 2 miles east of Delay Pass and 5.5 miles northwest of Bluecloud Mountain. There is little information to locate this placer occurrence along Conglomerate Creek and the site is arbitrarily plotted about 0.2 mile east of the center of section 28, T. 31 N., R. 14 W., of the Fairbanks Meridian, based on the location shown in Dillon (1982).
Geology: Although he did not visit Conglomerate Creek, Reed (1938) reported that very good prospects were found on it in the early 1900's. Bliss and others (1988) indicated that there was some activity in the 1980's. The mining is s hampered by large conglomerate boulders in the creek. Mosier and Lewis (1986) analyzed six samples of yellow gold from Conglomerate Creek. Panned samples collected by Kurtak and others (1999) contained no visible gold although one sample contained 250 ppb gold. Only one pan contained any metallic minerals, chiefly traces of magnetite and some pyrite.
Workings: Reed (1938) noted reports of mining on this creek, and Bliss and others (1988) indicated that there was some activity in the 1980's.
Age: Quaternary.

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

Other Databases

Link to USGS - Alaska:	WI094

Other Regions, Features and Areas containing this locality

References