Lode Mines and Prospects in the Fair banks District, Alaska - USGS
LODE MINES AND PROSPECTS, FAIRBANKS DISTRICT, ALASKA D3 the following high to anomalous content of metals: Bismuth, 10-15 ppm; lead, 150-5,000 ppm; beryllium, 3-10 ppm; and niobium, 20-50 ppm. Two samples (F-39 and F-40, on pl. 1) collected along a road about 1 mile northwest of Gilmore Dome show 3,000 and 10,000 ppm antimony, al though no metallization is megascopically visible