Ruth Creek Prospect, Tolovana Mining District, Yukon-Koyukuk Census Area, Alaska, USAi

Regional Level Types
Ruth Creek Prospect	Prospect
Tolovana Mining District	Mining District
Yukon-Koyukuk Census Area	Census Area
Alaska	State
USA	Country

Location: Cobb (1972, MF-413), loc. 3; NW1/4NW1/4 sec. 23, T. 8 N., R. 5 W., of the Fairbanks Meridian. The Ruth Creek prospect is a mineralized area on a spur west of Ruth Creek; it extends from an elevation of 1,400 feet southward to the top of the spur on the northwest side of Money Knob. Accuracy is within 1,500 feet.
Geology: Gold is found in numerous, nearly vertical quartz veinlets striking S. 20-60 E.; they contain pyrite and arsenopyrite (Mertie, 1918). Some of these veins contain up to 0.58 ounces of gold per ton (Mertie, 1918). The quartz veinlets are cut by calcite veins carrying some gold and sulfides (Mertie, 1918). Contiguous mineralized zones are up to 36 inches wide in altered dolomite-calcite-quartz-sulfide rock (Foster and Chapman, 1967). Small pits expose chromite in serpentinite, and a stibnite vein was uncovered in a placer cut (Joesting, 1942, ATDM Pamph. 1; Mertie, 1918).
Workings: Small excavations exposed chromite in serpentinite and a stibnite vein was uncovered in a placer cut (Joesting, 1942, ATDM Pamph. 1; Mertie, 1918).

Commodities (Major) - Au; (Minor) - Ag, Cr
Development Status: None
Deposit Model: Gold-quartz veins.

Other Databases

Link to USGS - Alaska:	LG012

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References