The Bluffy 1 showing is underlain by Middle to Upper Jurassic undivided sedimentary rocks of the Hazelton Group.

Eight and five centimetre-wide quartz veins were identified that graded 333 grams per tonne silver (B066037) and 133 grams per tonne silver, 6.2 per cent lead and 3.49 per cent zinc (B065334), respectively (Assessment Report 37443). Gold was slightly anomalous. The 5 centimetre wide vein contained 10 to 15 per cent galena. Parts of the vein that contained wallrock clasts approached 20 centimetres in width. The host rock is dark grey to black silty mudstone with weak fracture controlled carbonate alteration and very fine grained disseminated pyrite.

In 2017, Pretium Exploration conducted grass roots prospecting, sampling and mapping on their extensive Bowser property, mostly southwest and south of Bowser Lake. They collected 2901 rock and 429 silt samples (Assessment Reports 37435, 37443). The Bluffy 1 showing resulted from this work.

See Betty (104A 008) for details of the Bowser Lake property history, including discussion of geophysical work prior to 2017 that pertains to many occurrences including Bluffy 1.