The Abrahamson prospect is near the junction of North (Ferguson) Creek and South Lardeau Creek, near the community of Ferguson. The Abrahamson Group originally included the North Star, Crystal and Queen of the Hills tenures. The tenures were worked in the early 1890s; however, their precise location is uncertain.
The Tonawanda prospect is at 1300 metres elevation, on small draw south of Fissure Creek; an easterly draining tributary of Ferguson Creek, which flows south into Lardeau Creek at Ferguson. 
The mineral occurrence was located in the early 1900s and two adits were driven to explore a vein. In the mid-1950s, there was an unsuccessful attempt to excavate one of the adits and two short holes were drilled to test the mineralized structure at depth. The same ground was prospected as the Fergi #2 claim in the late 1980s, and it was held by St. Patrick Mining Limited in the early 1990s. 
The Tonawanda prospect is underlain by grey and black phyllites of the middle member of the Boadview Formation. The rocks are near the axis of the Silver Cup anticline and are isloclinally folded and locally highly deformed. The area has a similar structural and stratigraphic setting to the Nettie L.[082KNW100] deposit to the southeast.
The two adits on the property are at approximately 1300 metres elevation in a small draw 90 metres south of Fissure Creek. In 1904, the main crosscut is reported to have been driven through barren grey to black grits and phyllites for 16.7 metres. It cut the "lead" and then drifted on it for a further 12.2 metres. At some point, a winze was sunk on the "ore shoot" for a depth of approximately 9.0 metres. In 1955, there was an unsuccessful attempt to reopen the adit and explore the vein underground. The following year, the then operators diamond drilled two short holes, from bedrock near the portal, and encountered a large mud seam that contained a little pyrite and a few specks of chalcopyrite. By 1962, the portal was once again obscured by debris; however it was relocated through its dump. Although there were reported to be sulpide-bearing fragments on the dump at the time of the abortive effort to reopen it in the 1950s, none were found in 1962. The debris consisted of abundant fragments of black phyllite containing a little quartz but little in the way of economically significant sulphide. There is also a second, shorter, adit that traverses barren grey grits for approximately 15 metres. In 1958, a jeep-road was built to this adit from the True Fissure road.
St. Patrick Mining prospected the area between 1992 and 1997 and located a gossan in crushed phyllite on the adjacent Revenue [082KNW007] claim. The Company conducted several soil sample programs looking for extensions of the True Fissure mineralized system on the property, with mixed results.

Tonowanda Target Highlights