The Susan and Anna occurrences are located at approximately 1450 metres in elevation on the eastern side of a north-south trending ridge, approximately 2.2 kilometres west of the Bowser River.
The area is composed of ash tuffs with lesser dust and lapilli tuffs and interbedded augite porphyry of the Lower Jurassic Unuk River Formation, Hazelton Group. A north trending extension of Lower Jurassic Summit Lake Stock hornblende granodiorite intrudes the volcanics. This intrusive lobe is from 300 to 500 metres wide and separates andesitic volcanics to the west from dacitic volcanics to the east. The northern limit of the intrusion appears to be the east trending East Gold Fault. The Susan and Anna occurrence are located approximately 1.5 kilometres west of the northern limit of the intrusion and about 500 metres south of the East Gold Fault.
At the Susan zone an andesite hosts an oval-shaped zone of quartz+/-calcite stockwork/breccia with massive sulphides comprising chalcopyrite, arsenopyrite, galena and sphalerite over an area of approximately 150 by 350 metres.
The Anna zone is located immediately south east of the Susan zone and comprises a series of parallel shears and quartz-sulphide veins trending 090 degrees and dipping 70 degrees south.
A map of rock sample assays from 1983 by Tenajon Silver shows an area of high gold and silver. The best assay obtained was 2.06 grams per tonne gold and 65.49 grams per tonne silver (Assessment Report 11528). Several other samples contained much less significant amounts of gold and silver.
Claimstaker Resources Ltd acquired Austral Pacific’s option on the Tide property in 1990 and carried out extensive mapping at 1:1000 scale. The Susan and Anna quartz stockwork/breccia zones were discovered at the head of Eastgold Creek and rock samples were collected. This is in the same vicinity as indicated by the 1983 work of Tenajon. Pulse-EM surveys were carried out over grids at the Susan/Anna zones. Several chip and channel samples were taken at the Anna showing consisting of massive sulphides comprising chalcopyrite, arsenopyrite, galena and sphalerite. A 30-centimetre chip sample of rusty andesite with sulphides assayed 1.02 grams per tonne gold and 172.0 grams per tonne silver (Table 1, Assessment Report 20771).
Refer to Tide (104B 129) for details of the Tide property work history of which the Susan and Anna are part of.