Main commodities | Au |
---|---|
Other commodities | Ag; Pb; Sb |
Ore minerals | arsenopyrite; gold; jamesonite; scorodite |
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 descriptionBedrock 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. |
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 |
MRDS Number | A015311 |
---|---|
References | |
Reporters | J.R. Guidetti Schaefer and C.J. Freeman (Avalon Development Corporation) |
Last report date | 7/31/2001 |