|Quadrangle map, 1:250,000-scale||LG|
|Quadrangle map, 1:63,360-scale||B-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Cobb (1972, MF-413), loc. 2; NW1/4SW1/4 sec. 1, T. 6 N., R. 10 W., of the Fairbanks Meridian. This deposit is on Sawtooth Mountain. It is marked on the Livengood (B-6) quadrangle by a prospect symbol at the end of a trail up Buckeye Creek from the landing strip to the saddle on Sawtooth Mountain. The location is commonly believed to be accurate within about 50 meters.|
Geologic descriptionMassive stibnite occurs as a vertical cylinder about 3 m wide; it is hosted in argillite of Jurassic or Cretaceous flysch near a contact with Cretaceous granitic rock (Nokleberg and others, 1987; R. M. Chapman, written communication, 1985). The quartz monzonite has been K-Ar dated at 91.0+/-0.9 Ma (Weber and others, 1992). Grab samples from the dump have up to 46.2 percent Sb, 0.7 g/ton Au and 15.1 g/ton Ag (Nokleberg and others, 1987). The vein produced 590 tonnes of ore with 58 percent stibnite through 1970, with minor production in 1984 and 1985.
|Geologic map unit||(-149.526502300233, 65.3755410882569)|
|Mineral deposit model||Stibnite vein (Cox and Singer, 1986; model 27d).|
|Mineral deposit model number||27d|
|Age of mineralization||The granitic rock has been K-Ar dated at 91.0+/-0.9 Ma (Weber and others, 1992).|
|Workings or exploration||A shaft reached a depth of 83 feet (Saunders, 1958; ATDM PE 49-14).|
|Indication of production||Yes; small|
|Production notes||The vein produced 590 tonnes of ore with 58 percent stibnite through 1970, with minor production in 1984 and 1985 (Nokleberg and others, 1987).|
Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p.
Cox, D.P., and Singer, D.A., eds., 1986, Mineral deposit models: U.S. Geological Survey Bulletin 1693, 379 p.
|Reporters||C.J. Freeman, J.R. Guidetti Schaefer (Avalon Development Corporation); F.H. Wilson (USGS)|
|Last report date||3/15/2016|