Geologic description
As described by Roehm (1936 [MR 191-3] and 1938 [PE 119-12]), the Sleeping Beauty prospect consists of 6 claims, a 35-foot adit with a short crosscut along the mineralization, and several trenches and pits. The deposit is in greenschist and greenstone and consists of quartz and gouge along a fault that strikes N30W and dips 74SW. Numerous quartz stringers dip into the fault from its footwall. The mineralized zone can be traced for about 300 feet. A sample 20 feet long along the mineralization in the crosscut averaged $11.00 per ton in gold (at $20.67 per ounce). The ore minerals are free gold, pyrite, and minor chalcopyrite in a gangue of quartz, calcite, chlorite, and gouge. There was some work as late as 1936 but there is no record of production. Several chip samples collected by Bittenbender and others (1993) and Maas and others (1995) contained 2,255 to 7,737 parts per billion gold; one sample across 2.0 feet of vein contained 13.61 parts per million gold. The rocks in the area consist of metamorphosed andesite, basalt, agglomerate, and tuff, and minor flysch, shale, and phyllite. Eberlein and others (1983) and Brew (1996) consider them to be Paleozoic or Mesozoic in age; Gehrels and Berg (1992) tentatively mapped them as Jurassic or Cretaceous. |
