The San Mateo showing is located on the south side of Alberni Inlet near the headwaters of Spencer Creek on the Linda and San Mateo claims.

The area is underlain by limestone with minor interbedded calcareous argillite of the Upper Triassic Quatsino Formation, Vancouver Group overlain by Lower Jurassic Bonanza Group volcanic rocks. The sediments, intruded by Jurassic diorite of unknown affinity (mapped as Bonanza Group), occur in blocks which are sometimes fault-bounded.

Mineralization consists of small skarn lenses in limestone near the contact with diorite. The skarn lenses comprise two distinct types: 1) Epidote-garnet skarn with magnetite and variable chalco- pyrite and sphalerite and 2) Banded epidote-diopside skarn with erratic pods of sphalerite and galena. The mineralization is less than 0.60 metres wide.

In 1981, two samples (A81T-4 and -4a) of mineralized magnetite-skarn assayed 1.53 and 1.40 per cent copper, 5.98 and 1.25 per cent zinc, 25.37 and 7.89 grams per tonne silver with 1.54 and 1.89 grams per tonne gold, while another sample (A81T-14), taken from a similarly mineralized zone located approximately 430 metres to the south, yielded 0.86 gram per tonne gold, 16.11 grams per tonne silver, 2.75 per cent copper and 5.90 per cent zinc (Assessment Report 9671). Also at this time, a float sample (A81T-26) of garnetite with chalcopyrite, taken approximately 370 metres to the north west of samples A81T-4 and -4a, assayed 0.17 gram per tonne gold, 52.45 grams per tonne silver and 2.63 per cent copper (Assessment Report 9671).

Work History

A geochemical survey and 100 metres of trenching was done in 1965. A soil survey was conducted in 1980 (Assessment Report 8507), mapping and sampling in 1981 (Assessment Report 9671) and geophysical surveys in 1982 (Assessment Report 10840).

In 2014, a prospecting of the H&D property, consisting of the San Mateo (Minfile 092C 001), Gladys (Minfile 092C 047), and Edith (Minfile 092C 048) showings was carried out. In 2016, prospecting work was continued and a small rock sampling was carried out on the H&D property consisting of 4 rock samples in the Edith area.