The Oscar showing is hosted in rocks of the Lower Jurassic Telkwa Formation, Hazelton Group. A small Eocene stock of the Coast Plutonic Complex intrudes the strata to the immediate north of the area. Extensive masses of quartz diorite of the Middle Jurassic Trapper Plutonic Suite intrude to the north, west and south.

The Oscar showing was discovered in 2007 on the New Moon property of Anglo Columbia Mines Inc.

The area is characterized by a skarn zone bordering feldspar-amphibole phyric granodioritic porphyry. Large rosettes of magnetite and hornblende, garnets and coarsely recrystallized carbonate bands are all stratigraphically (compositionally) controlled. The parent rock is unknown, but was presumably a carbonate of some type. Sulphides are limited to pyrite which occurs as coarse euhedral grains confined to particular beds, typically those that contain abundant chlorite retrograded amphibole. Chalcopyrite, galena and sphalerite are only a very minor component, noted in some of the boulders and in outcrop within a single quartz-carbonate-epidote vein. Four grab samples were collected in 2007 which show only minor elevations in precious and base metals. Grab sample 07RTP390 yielded values of 0.65 per cent lead and 0.23 per cent zinc from a small quartz-epidote-sulphide vein in andesite while 07ARP174 yielded 0.11 gram per tonne gold and 13 grams per tonne silver from a strongly magnetite altered rock (Assessment Report 29585).

Refer to New Moon (093E 011) for related geological and work history details of those showings such as the Oscar showing that occur on the New Moon property.