The Mowitch occurrence is located along St Clair Creek, 300 metres south of its confluence with Carpenter Creek. New Denver, British Columbia lies 3 kilometres to the west.

The Mowitch occurrence was found on the former Mowitch group, consisting of the Mowitch (Lot 4558), St. Clair (Lot 4559), Rose Marie (Lot 4003), Home Run, Grand Stand and Ronald Fraction claims. Work on this occurrence has been intermittent over many years. Workings consisted of four adits and explore two vein-lodes crosscutting Slocan Group metasediments. The lower lode is referred to as the Mowitch, and the upper lode as the Rosemarie (082FNW237). The Mowitch lode was explored by two adits 34 vertical metres apart, and a shaft sunk from the upper adit at 23 metres from the portal.

The Mowitch occurrence is underlain by quartzite, limestone and interbedded argillite, predominantly massive. These strata strike northwest, dip steeply to the northeast and are intruded by feldspar porphyry dikes.

The Mowitch vein-lode has a strike of 040 degrees and dips northeast. The vein-lode conforms closely to the bedding of enclosing blocky, massive pyritized argillite. The lode is a well defined quartz-siderite filled fissure, varying from a few to 30 centimetres wide. Mineralization consists of disseminated tetrahedrite and lesser galena.

Ore has been stoped for most of the length of the upper adit and over 73 metres from the lower adit. Production figures recorded for the Mowitch occurrence indicate 83 tonnes ore mined, producing 316,161 grams of silver and 870 grams of gold intermittently over the 23 year period from 1902 to 1925.