| Quadrangle map, 1:250,000-scale | AR |
|---|---|
| Quadrangle map, 1:63,360-scale | B-3 |
| Latitude | 67.38 |
| Longitude | -157.2 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | Located on ridge west of Kalurivik Creek near Peak 3430 in sec. 24, T. 23 N., R. 8 E., Kateel River Meridian. Location is accurate to within 1000 ft. (300 m). |
Geologic descriptionBedding-controlled disseminated chalcopyrite deposit up to 6 ft (3 m) thick in metaquartzite, quartz-mica schist, quartz-chlorite schist. and locally marble. The copper-bearing beds are estimated to lie 4000 m stratigraphically below the Smucker rhyolite (Devonian). The host rocks could therefore be early Paleozoic or late PreCambrian. The copper-bearing rocks are interlayered with marbles and lie about 60 m stratigraphically above a stromatolite-bearing horizon. Other stromatolites are found along the ridge 7800 ft (2600 m) to the north, in a faulted syncline. | |
| Geologic map unit | (-157.202795668211, 67.3794636907495) |
|---|---|
| Mineral deposit model | Kuroko (Cox and Singer, 1986; model 28a)? |
| Mineral deposit model number | 28a? |
| Age of mineralization | Early Paleozoic? |
| Workings or exploration | Geologic mapping and some geochemical sampling. Claims staked in 1979 by Anaconda. One six foot (2 m) chip sample ran 0.34 percent Cu, 10 ppm Pb, 9 ppm Zn, 9 ppm Co. Two float samples ran 0.7 percent and 0.8 percent Cu, 40 and 29 ppm Pb, 18 and 14 ppm Zn, and 3 and 2 ppm Co. A sample from a vein in marble ran 4700 ppm Pb, 760 ppm Zn, 4.9 ppm Ag (unpublished Anaconda notes). |
|---|---|
| Indication of production | None |
Additional commentsDiscovered by Anaconda geologist in 1979. | |
| MRDS Number | A106046 |
|---|---|
| Reporters | S.W. Nelson (USGS retired) |
| Last report date | 5/12/1997 |