Elevation: 8,235 feet
Location: 1,475 ft N. 370 E. of new shaft of Conger mine.
Workings: See figure 84 in gallery.
Geology: Workings on overlapping veins in two vein zones, one trending about north and one northeast. Most of veins dip east, but chief vein in southern part of northward-trending workings dips west. Mine in schist that contains many elongated bodies of pegmatite; veins productive where they cross some of these.
History and production: Veins worked near surface before 1914, when Hershey reported that ore 24 to 30 in. wide and 75 ft long had been mined but had pinched out only a few feet below surface. Most of workings shown in figure 84 driven in 1941-42 by Vanadium Corp. of America, the owner; about 3,800 units of WO3 in ore averaging about 1.2 percent WO3 produced at this time. Total output probably at least 5,000 units.
Source: Geology and Ore Deposits of the Boulder County Tungsten District Colorado. USGS Professional Paper 245, 1953