| Quadrangle map, 1:250,000-scale | MH |
|---|---|
| Quadrangle map, 1:63,360-scale | A-2 |
| Latitude | 63.1713 |
| Longitude | -144.8431 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | The placer mine is on the north side of Slate Creek about one-half mile west of the mouth of Miller Gulch (see MH296) in the NE1/4 section 22, T. 20 S., R. 15 E., Fairbanks Meridian. The location for this record is based on an earlier compilation for the Mount Hayes quadrangle (W.J. Nokleberg, written communication, 1996). The accuracy of location is uncertain. |
Geologic descriptionPlatinum was produced during 1940 as a byproduct of gold prospecting in Treasure Gulch (Smith, 1942 [B 933-A]). At the mine site, minor gulches cut auriferous Pleistocene bench gravels formed when the mouth of Slate Creek was dammed by an ancestral Chistochina Glacier (Rose, 1967). The placer deposit on Treasure Gulch may be an alluvial reconcentration of gold and platinum contained in weakly metalliferous bench gravel. The deposit is probably of Holocene age. | |
| Geologic map unit | (-144.845327866601, 63.1709034027396) |
|---|---|
| Mineral deposit model | Placer Au-PGE (Cox and Singer, 1986; model 39a). |
| Mineral deposit model number | 39a |
| Age of mineralization | Holocene. |
| Workings or exploration | Small-scale prospect workings. |
|---|---|
| Indication of production | Undetermined |
| Production notes | Unknown amount of platinum recovered in 1940 (Smith, 1942 [B 933-A]). |
| MRDS Number | M045393 |
|---|---|
References | |
| Reporters | W.T. Ellis (Alaska Earth Sciences), C.C. Hawley (Hawley Resource Group), and W.J. Nokleberg (USGS) |
| Last report date | 7/9/2003 |