Reconnaissance of the Gold-Bearing Quartz Veins in the Tibbs Creek Area, Goodpaster River, Big Delta Quadrangle, Central Alaska.
Gold-bearing quartz veins at Tibbs Creek, Goodpaster River, about 54 miles n 60 deg. E of Delta Junction, central Alaska, were examined by the Bureau of Mines to determine the production potential and extent of the metalliferous lode area. The reconnaissance work was only 50 percent completed and an appraisal of the area on the basis of accumulated data would be misleading. Work was confined to sampling of pits and trenches. Underground workings at the Blue Lead, Blue Lead Extension, Grizzly Bear, and Grey Lead are iced but cursory inspection reveals they would be safe for entry after removal of ice barriers Bureau of Mines records show a scant 150 tons of ore, averaging 0.88 ounce of gold per ton, was produced from the Blue Lead, Blue Lead Extension, and Grizzly Bear. The amount of subsurface mining in this remote area is not explained by the surficial sampling and related work that was completed during the reconnaissance. Continuance of surface sampling and removal of ice barriers for entry underground to permit mapping and sampling is recommended.