The Top occurrence is 2.25 kilometres southwest of the south end of Harmon Lake and 8.0 kilometres west-northwest of Aspen Grove.
The occurrence is situated on the eastern flank of a broad north-northeast trending ridge separating Howarth Creek to the west from Kane Valley to the east. The eastern portion of the ridge is underlain by the Central volcanic facies of the Upper Triassic Nicola Group, comprising intermediate, feldspar and feldspar augite porphyritic pyroclastics and flows, and associated alkaline intrusions. The intrusions vary from diorite to monzonite in composition and are thought to be comagmatic with the Nicola Group, ranging in age from Late Triassic to Early Jurassic.
Locally, the area is underlain by amygdaloidal, porphyritic flows, containing numerous feldspar phenocrysts.
Mineralization consists of chalcocite, as amygdule infillings. Malachite accompanies this mineralization in surface exposures. Trenching and stripping has uncovered copper mineralization over an area 50 metres long and 30 metres wide.
In 1972, a percussion hole, drilled to a depth of 30.4 metres in this area, analysed 0.442 per cent copper over 25.9 metres (Assessment Report 4172, page 2, hole 5, 1.5 to 27.4 metres). A second hole, 30 metres to the west and 12.2 metres deep, analysed 0.435 per cent copper over 6.1 metres (hole 3, 6.1 to 12.2 metres).
In 2001, two grab samples (3838 and 3841) from historical trenches yielded 2.05 and 1.90 per cent copper, respectively, whereas a float sample (3839) from the trenches assayed 2.93 per cent copper and 5.3 grams per tonne silver (Assessment Report 26882).
Work History
Alakon Metals Ltd. drilled 8 percussion holes totalling 291 metres in 1972, after completing soil geochemical and geophysical surveys in that same year.
In 1973, Bow River Resources Ltd. completed a program of soil sampling on the area immediately south and west of the occurrence as the XX and KV claims.
In 2001, Integrated Monitoring Systems Inc. rock sampled the area as the Kimble 1 claim.