The Ashcroft showings comprise a series of milky quartz veins striking 140 degrees and dipping between 60 to 70 degrees northwest. They occur in shear zones in Upper Triassic Nicola Group andesite volcaniclastics and argillites near a contact with granitic rock. The veins pinch and swell and vary from 5 centimetres to 1.8 metres wide; one vein, 60 centimetres wide, was drifted along by a decline. Eleven veins have been found (Minister of Mines Annual Report 1933). Minor euhedral pyrite occurs along small cracks in the veins. In some faulted zones there is abundant limonite.

In 1933, the Ashcroft group of twenty-seven claims were optioned to Rufus Argenta Mines, Limited who carried out exploration work consisting of opencuts, trenches and tunnels followed by diamond drilling. Development work was done on the lower series of veins only. The owners stated that gold values were obtained in all exposures although samples taken from exposed faces yielded only traces of gold. In 1989-90, work done on behalf of J. Fleishman consisted of locating the old workings and rock sampling; samples did not yield significant results.