The Flo showing is located on the western side of Toba Inlet near the entrance. The showing is best exposed in a creek bed from approximately 600 metres elevation upwards.

The area is underlain by granodiorite and quartz monzonite of the Jurassic to Cretaceous Coast Plutonic Complex. The granodiorite and quartz monzonite have been intruded by andesitic to felsic dikes. The dikes trend north and northeast. Contained within the intrusion at this location is a small sliver of metamorphosed greenstone (porphyritic andesite/basalt) and felsic volcanic rocks with minor basalt. Breccia is noted in the greenstone.

Pyritic veins and veinlets up to 2.5 centimetres wide are associated with the dikes in fractured granodiorite and quartz monzonite. Also, in the vicinity of the breccia the volcanic rocks carry up to 10 per cent disseminated pyrite and the breccias show extensive pyrite fracture-filling. The rock geochemistry indicates that gold is associated with the pyrite.

An average assay from massive pyrite veins in greenstone returned 0.230 gram per tonne gold, 13.8 grams per tonne silver, 0.25 per cent copper, 0.0176 per cent zinc, 0.0082 per cent lead and 0.0012 per cent arsenic. Another sample from pyrite-veined diorite with minor quartz assayed 0.540 gram per tonne gold (Assessment Report 16854).

Several samples were collected in 1993 by Aquaterre Mineral Development Ltd., which yielded lower values. The highest values of 12 rock samples were 1.0 gram per tonne silver, 0.027 per cent copper and 0.019 per cent zinc (Assessment Report 23231).