| Quadrangle map, 1:250,000-scale | LG |
|---|---|
| Quadrangle map, 1:63,360-scale | B-6 |
| Latitude | 65.376 |
| Longitude | -149.524 |
| 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). |
| MRDS Number | A015372 |
|---|---|
References | |
| Reporters | C.J. Freeman, J.R. Guidetti Schaefer (Avalon Development Corporation); F.H. Wilson (USGS) |
| Last report date | 3/15/2016 |