| Quadrangle map, 1:250,000-scale | NT |
|---|---|
| Quadrangle map, 1:63,360-scale | C-3 |
| Latitude | 67.62 |
| Longitude | -163.4154 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | This occurrence consists of outcrop in Rabbit Creek at an elevation of about 500 feet. It is about 6.2 miles southeast of Igiglogruk Mountain, about 0.3 mile south of the center of Section 28, T. 26 N., R. 21 W., of the Kateel River Meridian. The location is accurate within 1/2 mile. |
Geologic descriptionThis occurrence consist of a 4-inch-thick sulfide-bearing quartz vein with iron and copper staining and about a dozen sulfide-quartz boulders (as much as 4 feet wide by 6.3 feet long) that contain pods, wisps, and bands of hematite, pyrite, chalcopyrite, and minor bornite (Barker and Roberts, 1985). The host rock is gray to green, crenulated phyllite of the Devonian to Permian(?) Mississippian Endicott Group. Grab samples average 3.13 percent copper and 0.034 percent cobalt. The highest grade sample contained 6.7 percent copper, 0.153 percent cobalt, and 11.0 parts per million silver. | |
| Geologic map unit | (-163.418285415401, 67.6193279103913) |
|---|---|
| Mineral deposit model | Quartz vein and stratiform sulfides. |
| Age of mineralization | Devonian or younger based on the age of the host rock. |
| Workings or exploration | Only limited surface sampling. |
|---|---|
| Indication of production | None |
| Reserve estimates | None. |
Additional commentsThis occurrence is now with the Cape Krusenstern National Monument which is closed to mining and mineral exploration. | |
References | |
| Reporters | J. M. Schmidt and J.A. Dumoulin (U.S. Geological Survey) |
|---|---|
| Last report date | 10/14/1996 |