| Quadrangle map, 1:250,000-scale | DL |
|---|---|
| Quadrangle map, 1:63,360-scale | B-2 |
| Latitude | 68.43 |
| Longitude | -162.76 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | This occurrence is at an elevation of about 1,650 feet on the east bank of the upper Kukpowruk River. The map site is in section 6, T. 12 S., R. 46 W., of the Umiat Meridian. Location is accurate to within 1 mile. |
Geologic descriptionThis occurrence consists of malachite that coats a 6-inch-wide fracture zone subparallel to bedding in Mesozoic maroon shale (C.F. Mayfield, written communication, 1979). Nearby creek gravels are iron stained. | |
| Geologic map unit | (-162.763004766716, 68.4293566409571) |
|---|---|
| Mineral deposit model | Secondary copper mineral coating a fracture. |
| Age of mineralization | Mesozoic? |
| Alteration of deposit | Oxidation of copper mineral. |
| Indication of production | None |
|---|
| MRDS Number | A015694 |
|---|---|
| Reporters | Anita Williams (Anchorage, AK) |
| Last report date | 12/21/1999 |