| Main commodities | Cu |
|---|---|
| Ore minerals | chalcopyrite; pyrrhotite |
| Quadrangle map, 1:250,000-scale | BS |
|---|---|
| Quadrangle map, 1:63,360-scale | D-3 |
| Latitude | 59.98 |
| Longitude | -147.91 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | The occurrence is located on the southeast side of Latouche Island in the E1/2 of section 28, T. 2 S., R. 9 E., of the Seward Meridian. This occurrence is described as a landslide block of unknown size (Nelson and others, 1984). This location is accurate to within a half a mile. |
Geologic descriptionThe occurrence is on a landslide block of slate and graywacke of the Tertiary Orca Group which contains three beds with chalcopyrite and pyrrhotite that are conformable to the bedding. The beds are up to 2 foot wide and extend along strike for 500 feet. A 20 foot wide chip sample across all three zones contained 2.5 percent copper and 18 ppm silver (Nelson and others, 1984). Other limonite-stained rock are exposed in this area. | |
| Geologic map unit | (-147.912011980606, 59.9793410450476) |
|---|---|
| Mineral deposit model | Besshi massive sulfide (Cox and Singer, 1986; model 24b). |
| Mineral deposit model number | 24b |
| Age of mineralization | Tertiary. |
| Indication of production | None |
|---|
| MRDS Number | 10307302 |
|---|---|
| Reporters | Jeff A. Huber (Anchorage) |
| Last report date | 3/15/1999 |