The Vent prospect is located 1.5 kilometres northwest of the Seneca deposit (092HSW013) along the east side of the Chehalis River, about 9 kilometres north of Harrison Mill, British Columbia.

The Vent zone is 2 kilometres to the northwest along strike from the Kuroko-type Seneca deposit. The Fleetwood and 33 zones (092HSW165), are about 1.5 kilometres northwest of the Vent zone. For further details on the Seneca deposits readers are referred to the article by McKinley et al. (Fieldwork 1994).

The area is underlain by Lower to Middle Jurassic Harrison Lake Formation rocks comprised mainly of pyroclastic flows and tuffs of intermediate to felsic composition. The Vent prospect is underlain by bedded quartz-feldspar crystal lapilli tuffs, multilithic tuff breccias and very fine grained ash tuffs. Most of the rock exposures are described as feldspar and quartz feldspar porphyry units.

Stockwork and stringer sulphides are the dominant style of mineralization in the Vent zone. The stockwork consists of veinlets up to 1 centimetre wide of sphalerite, pyrite and quartz +/- chalcopyrite in strongly altered dacitic flows, breccias, intrusions and mixed lava clast breccia. Also reported but not common, is barite and galena.

Two copper-zinc showings were initially reported, both appearing to be fault bound. The lower showing is bound by quartz feldspar porphyry and the upper showing exposes both feldspar (hornblende) porphyry and quartz feldspar porphyry on its flanks. Fault zones are characteristically less than 0.3 metre in width and carry pyritic, clay gouge. The faults trend north and northwest and appear to be high-angle faults by fracturing and subsequent hydrothermal alteration, including silicification and pyritization.

Alteration in this area is characterized by intense silicification and sericitization associated with massive to flow banded and flow brecciated dacite porphyry. The stockwork veining is restricted to the dacites but alteration extends 10 to 20 metres into surrounding fragmental rocks.

In 1985, drillhole 85-12 intersected mineralization over 9.6 metres which assayed 0.82 gram per tonne gold, 35.91 grams per tonne silver, 4.09 per cent zinc, 1.45 per cent lead and 0.26 per cent copper. Mineralization in drillhole 85-9 yielded an average of 1.69 per cent zinc over 33.53 metres (Assessment Report 14668).

In 2004, a 2.0 metre chip sample (NSS002) assayed 0.246 per cent copper, 0.230 per cent zinc, 8.7 grams per tonne silver and 0.189 gram per tonne gold (Allen, D.G. (2014-09-19): Technical Report on the Seneca VMS Project).

The area has been explored in conjunction with the nearby Seneca (MINFILE 092HSW013) occurrence and a completed property exploration history can be found there.