The M occurrence is located on the north side of Dick Booth Creek, approximately 2.2 kilometres southeast of the eastern end of Kains Lake.

Regionally, the area is underlain by northwest-trending belts of basaltic volcanics and carbonate sedimentary rocks of the Upper Triassic Karmutsen and Quatsino formations (Vancouver Group) and mafic volcanics and sediments of the Upper Triassic to Lower Jurassic Bonanza Group (Holberg volcanic unit, Nahwitti River wacke and Parson Bay Formation). These volcanic and sedimentary rocks have been intruded by granodioritic rocks of the Early to Middle Jurassic Island Plutonic Suite.

Locally, pyrite and chalcopyrite mineralization are present in tuffs of the Bonanza group and limestone of the Quatsino Formation along Bonanza andesite dike contacts and near diorite intrusives, possibly of Jurassic Island Plutonic Suite. The sediments dip 20 to 30 degrees to the south.

In 1990, samples of silicified limestone breccia, located approximately 1.1 kilometres to the east-southeast, yielded up to 0.07 per cent lead, 0.08 per cent zinc and 12.4 grams per tonne silver (32681; Assessment Report 20180).

In 1969, Meteor Minerals Inc. soil sampled the area as the M Group. In 1975, the area was prospected, mapped and sampled as the Sun and Moon claims. In 1982, BH Minerals Ltd. completed a program of geological mapping and geochemical (rock, silt and soil) sampling on the area as the PH 1-2 claims. In 1990 and 1991, Hisway Resources Corp. completed programs of prospecting and geochemical (rock, soil and stream sediment) sampling on the area as the Roy claim.