| Main commodities | Cu |
|---|---|
| Ore minerals | chalcopyrite |
| Gangue minerals | quartz |
| Quadrangle map, 1:250,000-scale | BS |
|---|---|
| Quadrangle map, 1:63,360-scale | D-3 |
| Latitude | 59.94 |
| Longitude | -148.04 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | The prospect is located on the southern end of Latouche Island in the SW1/4 of section 2, T. 3 S., R. 8 W., of the Seward Meridian. This is location 271 of Tysdal (1978) and location BS1 of Nelson and others (1984). This location is accurate to within a half mile. |
Geologic descriptionThe host rock of this prospect is graywacke of the Tertiary Orca Group. The mineralization consists of quartz-chalcopyrite stringers within a 3 foot wide shear zone. The strike and dip if the mineralization is unknown. The graywacke strikes northeast and dips 50 to 70 to the southeast. A 3 foot chip wide chip sample of the mineralization contained 1.7 percent Cu and 8.5 ppm silver (Nelson and others, 1980). | |
| Geologic map unit | (-148.042033689976, 59.9393426663773) |
|---|---|
| Mineral deposit model | Quartz-chalcopyrite stringers. |
| Age of mineralization | Early Tertiary; stringers cut early Tertiary rocks. |
| Workings or exploration | A 6 by 6 foot shaft to an unknown depth was dug on the prospect in the early 1900s. There has been no production from this prospect (Nelson and others, 1980). |
|---|---|
| Indication of production | None |
| MRDS Number | A010596 |
|---|---|
| Reporters | Jeff A. Huber (Anchorage) |
| Last report date | 3/7/1999 |