The Manx showing is located at 579 metres elevation on the eastern slopes of Mount Kruger, south of the Lakeview (Lot 1899) Reverted Crown grant and west of the Dividend (Lot 1589) Crown grant (082ESW001). Osoyoos is located 2.25 kilometres to the southeast.
Little information is available on the early history of the Manx showing. In 1933, the Manx and Little Manx Fraction claims were part of the Dividend-Lakeview claim group owned by Northern Syndicate and later by Osoyoos Mines Ltd. The upper tunnel on the Little Manx Fraction claim was extended 7.6 metres for a total length of 61 metres. Further work was carried out on the Manx and Little Manx Fractions in 1934 and 1935, under ownership by Osoyoos Mines Ltd. and optioned to C. Antonson and D. Loney. Markus Resources Ltd. assumed ownership of the claims in 1986 and conducted property exploration programs in 1986 and 1987.
The regional geology of the Dividend-Lakeview area consists of medium to coarse grained granodiorite of the composite Middle Jurassic Similkameen batholith. To the west this includes alkali syenite and nepheline syenite of the Kruger intrusion. The Similkameen intrusion extends from 10 kilometres north of the Canada-United States border, south into Washington state. The granodiorite is grey-green, medium to coarse grained and dominantly composed of quartz, plagioclase and hornblende. The Similkameen batholith has intruded metasediments and metavolcanics of the Carboniferous to Permian Kobau Group. Intensely folded and metamorphosed quartzite, greenstone, phyllite, chlorite or mica schist with intercalations of dioritic rocks and sparse limestone lenses comprise lithologies. To the west lie a series of highly sheared schists, greenstones and quartzites known informally as the Kruger Schists. The greenstone has been highly sheared in many areas associated with emplacement of the Similkameen intrusion and other intrusions. Shear zones strike southeast and dip moderately to steeply northeast and southwest. Local variations occur however.
The Manx showing is hosted in limestone of the Kobau Group, near its contact with granite, granodiorite and monzonite of Osoyoos granodiorite, a satellite stock of the Similkameen batholith. On the Little Manx Fraction claim, the upper adit explored a 5 to 15 centimetre wide quartz vein striking 270 degrees and dipping 45 to 70 degrees north. The footwall of the vein was followed for 45.7 metres, where it was offset 9 metres south by a southwest-trending fault. Beyond this fault a massive siliceous band of pyrite up to 1.8 metres wide follows the quartz vein. Mineralization associated with the quartz vein and massive pyrite band consists of chalcopyrite with malachite staining.
A sample taken from the massive pyrite band in the upper tunnel yielded 17.14 grams per tonne gold (Minister of Mines Annual Report 1933, page 164). A grab sample taken from the Little Manx Fraction dump in 1987 yielded 0.07 per cent copper, 0.24 gram per tonne silver and 0.60 gram per tonne silver (Assessment Report 16074). The skarn sample consisted of epidote, garnet, calcite, magnetite, chalcopyrite and malachite.
In the Manx adit, a chip sample across 1.5 metres yielded 11.31 grams per tonne gold (Minister of Mines Annual Report 1934, page D13). During 1987, sample TC-87-002 taken 100 metres southwest of the Manx adit, yielded 1.19 per cent copper, 3.1 grams per tonne gold and 28.5 grams per tonne silver (Assessment Report 16074). The sample was taken from a lens of massive pyrite within a east trending shear in metavolcanics of the Kobau Group.
