The Trio 1 occurrences are located on a northeast facing slope, approximately 1.5 kilometres south of Trio Mountain and 10 kilometres northeast of the town of Gold River.

The area is underlain by massive green porphyritic basalt of the Upper Triassic Karmutsen Formation (Vancouver Group). These have been intruded by a stock of the Early to Middle Jurassic Island Plutonic Suite.

Locally, epidote altered andesite and basalt host disseminated pyrite and chalcopyrite. In 1995, sampling yielded 0.18 per cent copper over 10 metres; with up to 0.76 per cent copper in individual samples. Other samples, taken few hundred metres to the southwest, assayed up to 2.8 per cent copper and 7.9 grams per tonne silver (Assessment Report 24090).

In 1994 and 1995, Orvana Minerals completed programs of geological mapping and geochemical sampling on the area as the Heber claims. In 2011, Universal Ventures Inc. completed a program of geochemical sampling, geological mapping and an airborne geophysical survey on the area as the Tib claims, Tibor property.

In 2018 an interpretive study was conducted on the Trio property by tenure holder K. Galambos. The study included air photo and geophysical interpretation as well as historical research and limited prospecting on the area surrounding Trio Mountain (Assessment Report 38109).