|Quadrangle map, 1:250,000-scale||SI|
|Quadrangle map, 1:63,360-scale||D-8|
|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)|
|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|
Additional commentsThe prospect is in West Chichagof-Yakobi Wilderness.
Bittenbender, 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.
Kimball, A.L., 1982, Mineral land assessment of Yakobi Island and adjacent parts of Chichagof Island, southeastern Alaska: U. S. Bureau of Mines Mineral Land Assessment report, MLA 97-82, 199 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]
|Reporters||H.C. Berg (U.S. Geological Survey)|
|Last report date||10/16/2004|