The Five Fissures showing occurs 1.6 kilometres southwest of the confluence of Forty-seven Mile and Whipsaw creeks, 26.5 kilometres southwest of Princeton.
The region at the headwaters of Whipsaw Creek is underlain to the west by intrusive and metamorphic rocks of the Late Jurassic to Early Cretaceous Eagle Plutonic Complex and to the east by metamorphosed volcanics and sediments of the Upper Triassic Nicola Group. The contact between the two units strikes north-northwest. A northwest-trending ultramafic body, possibly related to the Early Jurassic Tulameen Ultramafic Complex, intrudes Nicola Group rocks east of the showing. The body is 100 metres wide and consists of pyroxene porphyroblastic amphibolitic schists.
The showing consists of a north-striking quartz vein network, 15 metres wide on surface, in chlorite sericite schist of the Nicola Group. An adit driven under the showing suggests the zone widens with depth. This deposit is one of several occurrences (Knight and Day, MINFILE 092HSE072; S and M, MINFILE 092HSE073) hosted in the same fault zone, which extends north-northwest across Whipsaw Creek for at least 1.5 kilometres.
The vein network is mineralized with sphalerite, pyrite, galena, chalcopyrite, native silver, argentite and possibly native gold. Chalcocite is also reported. Extensive carbonate, clay and sericite alteration surrounds individual veins.
In 1973, a selected sample of sheared and leached rock assayed 0.17 gram per tonne gold, 170 grams per tonne silver, 14.0 per cent lead and 4.85 per cent zinc (Assessment Report 4170, page 10).
In 1990, a sample of gossan assayed 1.7 grams per tonne gold, 115.5 grams per tonne silver, 0.237 per cent copper, 1.962 per cent lead and 0.941 per cent zinc (Assessment Report 21186, page 17).
Whipsaw Mines Ltd. carried out geological mapping, soil sampling, geophysical surveying and trenching over the showing between 1970 and 1974. During 1982 through 1993, World Wide Minerals completed various programs of prospecting, geochemical sampling and drilled 16 holes, totalling 1769 metres, on the area. During 1995 through 1998, Martech Industries completed 10 diamond drill holes, totalling 1033.5 metres, on various targets over the Whipsaw property. In 2000, a pulp sampling program was completed to test for platinum group elements from former trenching and drilling programs but results were disappointing. In 2005, Canfleur Mining completed a program of sampling and seven diamond drill holes, totalling 1452.8 metres, on the area. During 2010 through 2015, Martech Industries completed programs of rock and soil sampling.