The Hudson Bay Mountain area is underlain mainly by volcanic rocks of the Lower Jurassic Hazelton Group. Pyroclastic rocks, particularly lapilli tuff, of intermediate composition are the most abundant. Three main groups of felsic intrusions have been recognized in the district. These include felsites, granodiorites and Tertiary porphyries. Mineralization in the area seems to be genetically related to the Tertiary porphyry intrusions.
Rocks at the King Tut occurrence consist mainly of rhyolite, andesite, tuff and andesite flow breccia. Mineralization is associated with a shear zone from about 0.3 to 1.2 metres in width with a strike of 065 degrees to 070 degrees and a dip 70 southeast to 70 degrees northwest. The main sulphides present are sphalerite, galena, chalcopyrite, arsenopyrite and pyrite. A channel sample across about 30 centimetres assayed trace gold and 10.97 grams per tonne silver (Minister of Mines Annual Report 1924, page 96).
WORK HISTORY
The King Tut, King Tut No. 1, Hope, and Fortune fractional claims were owned in the 1920s by R.L. Gale. In 1924, Milligan Brothers sank a 15-metre shaft on the vein and exposed it in several open cuts. J.J. O'Brien and F.H. Taylor held an option on the property during 1927-28 and explored the vein from the creek level by a 106-metre cross-cut and a 20-metre drift.
In 2011, a surficial exploration program was completed on the Hudson Bay Mountain property by Lions Gate Metals Inc from June to August 2011. Focus was given to locating and testing historical showings and investigating areas outlined by the 2008 Quest West airborne survey. Historic mineral occurrences on the property are: King Tut [093L 087] (prospect); Bonanza [093L 096] (showing); Silver Lake (L.7239) [093L 097] (Past Producer); Iron Vault (L.5754) [093L 098] (Past Producer); Mammoth (L.7249) [093L 100] (Prospect); Copper Queen (L.5751) [093L 101] (Developed Prospect); Josie (L.7251) [093L 229] (Prospect); and Silver Lake 2 (L.7240) [093L 231] (Past Producer).
Silt samples were collected from creeks within and draining the property and several soils grids were completed over areas of interest. A total of 122 rock samples were collected and submitted for assay over the 2011 field program. Samples were collected from areas of known mineralization as well as new areas. Results obtained from samples collected from known showings support historical results. Rocks samples were collected from King Tut, Iron Vault, Copper Queen, Josie, Silver Lake 2 and Silver Lake. Efforts were made to locate the Mammoth, Rachel, Vancouver and Bonanza showings but were considered unsuccessful.