Geologic descriptionGilbert (1988) describes numerous samples within an area of about 1/2 mile in diameter as being quartz schist, felsic schist, or silicified rock with varying amounts of pyrrhotite, pyrite, and some chalcopyrite. Sample values are as high as 6.3 ppm silver, 1,300 ppm copper, 215 ppm cobalt, and 1,600 ppm barium. The host rocks are mapped by Gilbert (1988) as Paleozoic volcanics. His descriptions of felsic schist and quartz schist suggest a Paleozoic age for the mineralization if the rocks are volcanic. Alternatively, the felsic and quartz schists may be due to silicification and/or alteration related to nearby Cretaceous granodiorite intrusives. |
Geologic map unit |
(-135.581838687906, 59.1396688198706) |
Mineral deposit model |
Unknown. Felsic schists are suggestive of a possible volcanogenic massive sulfide or, perhaps, an alteration zone peripheral to an intrusive. |
Age of mineralization |
Unknown. If the felsic schist that hosts the deposit is volcanic, then the mineralization is probably Paleozoic. If the felsic schists are alteration zones peripheral to an intrusive, then the mineralization is probably related to the nearby Cretaceous intrusive rocks (Gilbert, 1988). |
Alteration of deposit |
Silicification? |