| Main commodities | Au |
|---|---|
| Other commodities | Ag; Cu |
| Ore minerals | arsenopyrite; chalcopyrite; gold; pyrite; pyrrhotite |
| Gangue minerals | calcite; quartz |
| Quadrangle map, 1:250,000-scale | SR |
|---|---|
| Quadrangle map, 1:63,360-scale | C-5 |
| Latitude | 60.5131 |
| Longitude | -148.8376 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | This occurrence is located in the NW1/4 section 24, T. 5 N., R. 3 E., of the Seward Meridian. It is at an elevation of 2,400 feet, near the toe of an unnamed glacier that is above the west headwaters fork of the Kings River. This is location S-183 of Jansons and others (1984). It is accurate to within a quarter of a mile. |
Geologic descriptionThis occurrence consists of numerous sulfide-bearing quartz-calcite veins in fractured Oligocene felsic dikes that intruded Valdez Group carbonaceous slate and quartzite of Late Cretaceous age (Jansons and others, 1984). The dikes range from 1 to 5 feet thick and generally strike N35E and dip 55 to 80 NW. The dikes contain as much as 15 percent quartz-calcite veins that carry arsenopyrite, chalcopyrite, pyrite, pyrrhotite, and gold. This occurrence was discovered by the U.S. Bureau of Mines in 1980 (Hoekzema and Sherman, 1983). A single grab sample contained 0.75 ppm gold and 3.5 ppm silver along with minor amounts of base metals. Coarse gold occurs in stream sediments downstream from this occurrence. | |
| Geologic map unit | (-148.839694685211, 60.5124984912415) |
|---|---|
| Mineral deposit model | Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a) |
| Mineral deposit model number | 36a |
| Age of mineralization | Oligocene or younger; the veins are in dikes that are Oligocene in age. |
| Workings or exploration | This occurrence was discovered by the U.S. Bureau of Mines in 1980. A single grab sample contained 0.75 ppm gold and 3.5 ppm silver, along with minor amounts of base metals. Coarse gold occurs in stream sediments downstream from this occurrence. |
|---|---|
| Indication of production | None |
References | |
| Reporters | Jeff A. Huber (Anchorage) |
|---|---|
| Last report date | 12/31/1999 |