| Quadrangle map, 1:250,000-scale | SD |
|---|---|
| Quadrangle map, 1:63,360-scale | A-6 |
| Latitude | 57.03894 |
| Longitude | -133.89459 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | This occurrences is about 2.8 miles southwest of Turn Mountain along a logging road. It is about 0.5 mile north of the center of section 12, T. 56 S., R. 72 E. |
Geologic descriptionThis occurrences was discovered by Still and others (2002). A lens of massive barite about 2 feet thick and 6 feet long is exposed in soil above a logging road. The barite contains scattered galena and sphalerite. A select sample contained 13.1 parts per million silver, 1.02 percent lead, 2.0 percent zinc, and 48.37 percent barium. The rocks in the area are mainly argillite of the Hyd Group of Triassic age (Karl and others, 1999). | |
| Geologic map unit | (-133.896318595623, 57.0386034024817) |
|---|---|
| Mineral deposit model | Volcanogenic massive sulfide deposit? (Cox and Singer, 1986, model 28a). |
| Mineral deposit model number | 28a? |
| Age of mineralization | Unclear but associated with rocks of Triassic age. |
| Workings or exploration | None; the only work has been surface sampling by government geologists. |
|---|---|
| Indication of production | None |
ReferencesStill, J.C., Bittenbender, P.E., Bean, K.W., and Gensler, E.G., 2002 Mineral assessment of the Stikine area, central Southeast Alaska: U.S. Bureau of Land Management Technical Report 51, 560 p.
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| Reporters | Donald Grybeck (U.S. Geological Survey) |
|---|---|
| Last report date | 10/8/2004 |