Unnamed (near Spruce Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au
Other commodities Ag; Pb; Sb
Ore minerals arsenopyrite; gold; jamesonite; scorodite

Geographic location

Quadrangle map, 1:250,000-scale FB
Quadrangle map, 1:63,360-scale A-4
Latitude 64.083
Longitude -148.925
Nearby scientific data Find additional scientific data near this location
Location and accuracy This unnamed prospect is located in sec. 4, T. 10 S., R. 7 W., Fairbanks Meridian. Although this occurrence is called Spruce Creek, Cobb plotted it at the head of Rex Creek, just west of Spruce Creek. The coordinates reflect Cobb's location; it is unclear if this location is accurate, and this occurrence may be a mile or more away. The occurrence is locality 38 of Cobb (1972 [MF 410]).

Geologic setting

Geologic description

Bedrock in the area is gray quartz-orthoclase-sericite schist and augen gneiss of the California Creek Member of the Totalanika Schist (Wahrhaftig, 1970 [GQ-810]). Berg and Cobb (1967, p. 202-203) reported a few gold-bearing lodes and small jamesonite-bearing veins. Samples from an antimony-bearing vein contained 0.44 ounce of gold per ton and 5.4 ounces of silver per ton (Joesting, 1943 [ATDM Pamph. 2, p. 14]).
Geologic map unit (-148.927341325027, 64.0825400433488)
Mineral deposit model Gold- and antimony-bearing veins in quartz-orthoclase-sericite schist.

Production and reserves

Workings or exploration The only work that has been reported is hand samples taken of a vein for assay (Joesting , 1943 [ATDM 2, p. 14]).
Indication of production None

References