| Quadrangle map, 1:250,000-scale | MG |
|---|---|
| Quadrangle map, 1:63,360-scale | A-6 |
| Latitude | 62.233 |
| Longitude | -155.592 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | This unnamed occurrence is located in a small saddle along a southwest-northeast-trending spur overlooking a south-flowing tributary of the Tatlawiksuk River; it is at an elevation of 2,150 feet (655 m) in the NW1/4 sec. 28, T. 25 N., R. 34 W., of the Seward Meridian. The reporter visited the site in 1978; at station no. 78BT196. |
Geologic descriptionThis unnamed occurrence is a pyrite-rich quartz-breccia zone within a N5E-trending, high-angle fault zone that juxtaposes quartz monzonite and thermally altered Kuskokwim Group rocks (Wilson and others, 1998). A pronounced fault zone is at least 15 meters thick and extends for 10 kilometers along strike. One grab sample of pyrite-rich gossan from the fault zone contained 10.1 grams/tonne silver and 142 ppm copper (T.K. Bundtzen, written communication, 1998). | |
| Geologic map unit | (-155.594330548531, 62.232345654464) |
|---|---|
| Mineral deposit model | Polymetallic vein (Cox and Singer, 1986; model 22c). |
| Mineral deposit model number | 22c |
| Workings or exploration | The unnamed occurrence was found by the reporter during geologic mapping conducted for the Alaska Division of Geological and Geophysical Surveys; and eventually published in Wilson and others (1998). One grab sample contained 10.1 grams/tonne silver and 142 ppm copper (T.K. Bundtzen, written communication, 1998). |
|---|---|
| Indication of production | None |
| Reserve estimates | None. |
| MRDS Number | 10307831 |
|---|---|
References | |
| Reporters | T.K. Bundtzen (Pacific Rim Geological Consulting) |
| Last report date | 12/18/1998 |