Little Blonde; High Grade Prospect, Chichagof District, Sitka Borough, Alaska, USA
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Geology: Loney and others (1975) map the rocks in the area of this prospect as Jurassic and Cretaceous graywacke. The rocks near the prospect are cut by at least one high-angle, north-striking fault, and the Neva Strait Fault, a regional-scale, steeply-dipping, northwest-striking fault is about 4 miles northeast of the prospect. Bittenbender and others (1999) describe the prospect as a gold-lead-zinc-bearing, quartz vein along the contact between greenstone and argillite. Samples from the Little Blonde claim assayed up to 0.42 ounce of gold per ton across 0.6 foot of quartz. Selected mineralized float on the High Grade claim assayed up to 3 ounces of gold per ton, but most of the samples contained no gold. The ore minerals were not identified.
Workings: Only surface sampling.
Commodities (Major) - Au, Pb, Zn
Development Status: Undetermined.
Deposit Model: Low-sulfide gold-quartz vein (Cox and Singer, 1986; model 36a).
1 entry listed. 1 valid mineral.
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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. Loney, R.A., Brew, D.A., Muffler, L.J.P., and Pomeroy, J.S., 1975, Reconnaissance geology of Chichagof, Baranof, and Kruzof Islands, southeastern Alaska: U.S. Geological Survey Professional Paper 792, 105 p. Roehm, J.C., 1938, Preliminary report of Litt1e Blonde and High Grade Groups, Kruzof Island. Alaska: Alaska Territorial Department of Mines, Property Examination 114-11, 3 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]