|Quadrangle map, 1:250,000-scale||SI|
|Quadrangle map, 1:63,360-scale||C-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The location of this occurrence is only known to be approximately near sea level on the southwest shore of Sister Lake at the north foot of Flat Top Mountain. For this record, the site is plotted 0.1 mile east of the west edge of the C-6 quadrangle, in sec. 18, T. 49 S., R. 59 E. It is location P-84 of Bittenbender and others (1999).|
Geologic descriptionJohnson and Karl (1985) map the rocks in the area of this occurrence as the Freeburn assemblage, a collage of kilometer-scale, fault-bounded, lozenge-shaped blocks of Cretaceous and Cretaceous(?) metasedimentary and metavolcanic rocks. The rocks are cut by numerous steeply-dipping, northwest-striking faults. The southeastern extensions of the faults at the Hirst (SI087) and Chichagof (SI093) mines, which control the mineralization there, are about a mile southwest of this occurrence. Bittenbender and others (1999), citing Still and Weir (1981), report that the prospect is a quartz vein in graywacke. A sample of quartz float contained 2 parts per million gold.
|Geologic map unit||(-135.999718297835, 57.6249336092992)|
|Mineral deposit model||Low-sulfide gold-quartz vein (Cox and Singer, 1986; model 36a).|
|Mineral deposit model number||36a|
|Workings or exploration||A sample of quartz float contained 2 parts per million gold.|
|Indication of production||None|
Additional commentsThe occurrence 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.
|Reporters||H.C. Berg (U.S. Geological Survey)|
|Last report date||10/16/2004|