| Quadrangle map, 1:250,000-scale | MH |
|---|---|
| Quadrangle map, 1:63,360-scale | A-2 |
| Latitude | 63.1548 |
| Longitude | -144.85 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | The occurrence is on the east-facing slope above upper Powell Gulch at an elevation of about 5,250 feet. It is about 0.2 mile north of the center of section 27, T. 20 S., R. 15 E., Fairbanks Meridian. The occurrence corresponds to locality 26 of Rose (1967). The location is probably accurate within 0.2 mile. |
Geologic descriptionThe rocks that crop out just above this occurrence are pyritized and are mainly andesite of probable Pennsylvanian age. Boulders below the outcrop are mainly composed of hematite, magnetite, pyrite, and chlorite; they are probably nearly in place, but no source was found (Rose, 1967). No sample was analyzed. | |
| Geologic map unit | (-144.852226170184, 63.1544021145567) |
|---|---|
| Mineral deposit model | Fe skarn? (Cox and Singer, 1986; model 18d?). |
| Mineral deposit model number | 18d? |
| Age of mineralization | Uncertain; epigenetic mineralization of Pennsylvanian volcanic rocks. |
| Alteration of deposit | Pyritization; introduction of magnetite, hematite, and chlorite. |
| Workings or exploration | There are no workings at this site. |
|---|---|
| Indication of production | None |
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 |