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

The Gossan showing is exposed along a precipitous river canyon and is extremely difficult to access. Limited sampling had been conducted by Newmont in 1987 but no significant results were reported. The zone is developed along what is interpreted to be a northwest trending structure that appears to be continuous with that hosting the Rhyolite Flats showing 5.5 kilometres to the south. The gossan zone is developed for 500 metres plus along the creek and is believed to represent a zone 350 metres plus in true width. Grab samples of float downstream yielded elevated silver values from extensively silicified and pyritized volcanics and/or fine grained intrusives (13 grams per tonne silver in sample 90-NMGC-017b).

In 1990, Maple Resources Corp evaluated the Gossan Creek showing with chip sampling, soil sampling and geophysical techniques. Technical climbers were hired to access and sample the gossanous cliff faces. Results were disappointing, with only a few mildly elevated copper, zinc and arsenic values being obtained

In 2007, the Gossan Showing was relocated, but was not sampled or studied as it is located along the walls of a very precipitous river canyon. Seven boulder samples were collected upstream of the showing but yielded only minor amounts of copper.

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