The area of the Lilli showing is underlain by Jurassic rock of the Salmon River, Betty Creek and Mount Dilworth formations, Hazelton Group.

In 1990, Teuton Resources collected 75 rock samples and 9 silt samples on their Lilli claims.

The only extensively gossanous zone identified on the Lilli claim Group is at the toe of a hanging glacier at the eastern margin of the property. It appears to be strongly associated with intensely fractured argillites having a highly localized, well developed coarse, penetrative foliation that trends approximately 200 degrees south. The foliation is well-developed in a zone approximately 100 metres wide and ranges from a fine penetrative foliation to a coarse foliation. The rocks in this area are strongly to intensely iron-stained. The dominant lithology is a laminated argillite with thin (less than 1 centimetre) light brown weathering arenitic intervals.

The dominant sulphide developed in the fault controlled mineralized zone is pyrite. However, arsenopyrite and chalcopyrite were noted in several samples. The pyrite occurs in two forms: as pyrite-rich layers up to 1 centimetre thick and as pyrite-filled vuqs in discontinuous horizons. The gossanous zone at the toe of the glacier is up to 250 metres wide and extends from about the 1550 metres elevation level to the till at the edge of the Knipple Glacier (at approximately 1100 metres elevation).

A shear with quartz-carbonate veins in an iron stained, pyritic volcaniclastic assayed 54.0 grams per tonne silver (Sample BC-R-049, Assessment Report 21030).