| Main commodities | Cu |
|---|---|
| Ore minerals | chalcopyrite; pyrite |
| Gangue minerals | quartz |
| Quadrangle map, 1:250,000-scale | SR |
|---|---|
| Quadrangle map, 1:63,360-scale | D-1 |
| Latitude | 60.8598 |
| Longitude | -147.1617 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | The occurrence is located is in the NW1/4 section 3, T. 12 S., R. 11 W., of the Copper River Meridian. The occurrence is in the shallow cove between Bull Head and Cave Point on the southern end of Glacier Island. This is location 193 of Cobb and Tysdal (1980) and location S-110 of Jansons and others (1984). This location is accurate to within a quarter of a mile. |
Geologic descriptionThe occurrence consists of pyrite- and chalcopyrite-bearing quartz veinlets as much as 4 inches wide in sheared, mafic sheeted dikes of the lower Tertiary Orca Group. Five grab samples from this occurrence contained from 10 ppm to 0.5 percent copper (Jansons and others, 1984). | |
| Geologic map unit | (-147.163742891531, 60.8592632559418) |
|---|---|
| Mineral deposit model | Besshi massive sulfide (Cox and Singer, 1986; model 24b) |
| Mineral deposit model number | 24b |
| Age of mineralization | Tertiary or younger; the veins are in mafic sheeted dikes of the Orca Group of Tertiary age. |
| Workings or exploration | The U.S. Bureau of Mines collected five grab samples that contained between 10 ppm and 0.05 percent copper (Jansons and others, 1984). No workings are known. |
|---|---|
| Indication of production | None |
| MRDS Number | A010362 |
|---|---|
References | |
| Reporters | Jeff A. Huber (Anchorage) |
| Last report date | 1/30/2000 |