Main commodities | Cu; Ni; Zn |
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Ore minerals | chalcopyrite; sphalerite |
Gangue minerals | quartz |
Quadrangle map, 1:250,000-scale | SI |
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Quadrangle map, 1:63,360-scale | D-8 |
Latitude | 57.8211 |
Longitude | -136.3977 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | The Slim and Jim prospect is at sea level on an unnamed islet at the west mouth of Islas Bay. The prospect is about 0.4 mile south-southeast of the center of section 6, T. 47 S., R. 56 E. It is location P-40 of Bittenbender and others (1999) and MAS no. 0021140119 (U.S. Bureau of Land Management, 2002). The location is accurate within about 0.2 mile. |
Geologic descriptionJohnson and Karl (1985) describe the rocks in the area of this prospect as Cretaceous graywacke, cut by one or more northwest-striking, high-angle faults. Bittenbender and others (1999), citing the work of Kimball (1982), describe the deposit as a copper-bearing [quartz?] vein in a fault in graywacke. Samples across about 7 feet of the vein contained up to 1 percent copper, 0.3 percent zinc, and 200 parts per million nickel. | |
Geologic map unit | (-136.399540933809, 57.820722454385) |
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Mineral deposit model | Polymetallic vein? (Cox and Singer, 1986; model 22c). |
Mineral deposit model number | 22c? |
Age of mineralization | Cretaceous or younger. |
Indication of production | None |
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Additional commentsThe prospect is in West Chichagof-Yakobi Wilderness. |
ReferencesBittenbender, P., Still, J.C., Maas, K., and McDonald, M., Jr., 1999, Mineral resources of the Chichagof and Baranof Islands area, southeast Alaska: Bureau of Land Management, BLM-Alaska Technical Report 19, 222 p.
U.S. Bureau of Land Management, 2002, Alaska mineral locations database report (Sitka quadrangle), July 2, 2002, 205 p. [http://imcg.wr.usgs.gov/dem.html]
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Reporters | H.C. Berg (U.S. Geological Survey) |
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Last report date | 10/16/2004 |