The Bar occurrence is situated between Tchentlo and Takatoot lakes, approximately 61 kilometres southeast of Takla Landing.
The area is underlain by a north-northwest trending package of Carboniferous to Jurassic rocks assigned to the Cache Creek Complex which have been intruded by Mesozoic mafic and ultramafic rocks formerly assigned to the Middle Permian to Late Triassic Trembleur intrusions now termed Mississippian to Triassic Oceanic Ultramafites.
Within the Bar grid, a northwest-trending suite of olivine basalt and pyroxenite, intercalated with a thin lens of volcaniclastics(?) is in contact with massive limestone to the southwest and andesitic to basaltic tuffs and flows to the northeast. Magnetic data suggest that the ultramafic rocks form a steeply dipping dike. Local brecciation and shearing occur within both the intrusions and the Cache Creek rocks and is thought to be a result of a moderately to steeply dipping, north-northwesterly striking splay of the Pinchi fault zone. Locally, hydrothermal alteration of the ultramafic rocks has resulted in the development of quartz-carbonate- mariposite (listwanite) mineralization.
Trace amounts of cinnabar occur as blebs and fracture coatings in brecciated and quartz-carbonate altered, intermediate to mafic rocks (andesitic tuff?) and brecciated limestone. Quartz, chalcedony, calcite, ankerite, mariposite and very minor sulphides also occur in veinlets and as fracture coatings. Several float boulders were noted to contain carbonate-quartz veining hosting trace, fine-grained arsenopyrite(?) disseminations.
In 1989, Placer Dome completed a program of prospecting and soil sampling, totalling 984 samples. In 2007, Far Resources acquired the area as a part of their Tchentlo Lake property and performed reconnaissance soil geochemical surveys over the next three years. Three samples of quartz-carbonate altered rock with mariposite assayed greater than 0.001 per cent mercury. Of these, sample A6855 also analysed 0.080 gram per tonne gold (Assessment Report 20037, Figure 4).
