The Dirty Jack and associated showings are located south of Champion Creek, approximately 9.0 kilometres south east of Castlegar. The showing is a part of the Champion Creek Group of claims and has been explored by T. Kennedy since the mid-2000’s and was later joined by Kootenay Gold Inc. in 2008. From 2007 through 2010 a program of rock and soil geochemical surveys was performed on the property. These have identified a number of mineralized zones, over a 1 to 2 square kilometre area, including the Dirty Jack, Ion, Massive Sulphide Pit, Borrow and Arsenopyrite Hill zones.
Regionally, an area of metavolcanic and metasedimentary rocks of the Early Jurassic Rossland group occur as roof pendants within the Bonnington Batholith, a mid to late Jurassic granitic intrusive. There are also numerous locally occurring narrow intrusive dikes ranging from lamprophyre to syenite.
Locally three types of pendant Rossland Group rocks occur. Type 1 consists of mafic volcanic flows, with flow breccias, augite porhphoblasts, epidote, garnet, pyretic fracturing with minor chalcopyrite. Type 2 is sediment dominated with siltstone, quartzite, narrow limestone beds, conglomerate, pyretic and calc-silicate alteration is present, along with narrow pegmatite "veinlets" with pyrite. The third type is a pyrite- flooded sediment/volcanic mix, containing epidote and pyrite fractures up to 0.05 metres wide. This pendant hosts a mineralized area called the Ion Zone.
At the Dirty Jack showing, mineralization occurs as massive sulphide fractures and disseminations associated with carbonate slips and hairline fractures occurring in variably calc-silicat–altered rocks with weak sericitic alteration halos. Massive sulphides are composed of pyrrhotite, pyrite, sphalerite, chalcopyrite, and carry gold values, with minor though variable copper, lead or zinc, and elevated arsenic content. In 2007 a rock geochemical survey was conducted returning up to 5157.0 parts per billion gold (sample CH07-23; Assessment Report 30118).
The Ion showing contains crystalline to milky quartz veins cutting a fault zone within the pyretic sediment/volcanic pendant sequence. Mineralization is comprised of disseminated and fracture needle- like arsenopyrite, galena, sphalerite and chalcopyrite.
The Massive Sulphide Pit showing is a series of fractures containing pyrrhotite, pyrite and wispy chalcopyrite. It is situated adjacent to a carbonate altered structural zone with sericite, disseminated pyrite, galena, sphalerite, arsenopyrite and quartz veinlets. The zone is hosted by the sediment dominated pendant.
The Borrow zone is comprised of quartz carbonate veins with sericite, carbonate alteration, pyrite, cutting the granite and a schisty pendant unit. A greenstone dike is also present. Milky/vuggy quartz veins are up to 0.18 metres wide with iron carbonate, pyrite, arsenopyrite, galena, sphalerite, and chalcopyrite.
The Arsenopyrite Hill zone consists of quartz carbonate veinlets with limonite, pyrite, arsenopyrite, halos of silicification, pyrite, arsenopyrite flooding of the wallrock. Veins are hosted within the sediment- dominated pendant. There are some massive sulphide fractures and replacements with rare galena, and sphalerite. Pegmatite veinlets with black tourmaline and pods of pyrrhotite and pyrite with rare arsenopyrite are also present.
In 2017, 66 Resources Corp. undertook an exploration program on the property containing the occurrence. The program included soil and rock sampling. The South Grid was centered on the Dirty Jack occurrence. Highlighted results included low but anomalous gold values with a range of 52 to 171 parts per billion between samples 257632, 257633, and 257635 (Strickland, D. (2018-03-19): NI43-101 Technical Report on the Champ Property).
