The Mero 1 occurrence is located west of the Cameron River, approximately 2.2 kilometres northeast of Loon Lake.

The area is underlain by Paleozoic Sicker Group rocks of the Nitinat, Myra, and Buttle Lake Formations, and lesser amounts of Triassic basaltic rocks of the Karmutsen Formation. A major northwesterly- striking fault zone runs through the property, with associated local shear deformation and listwanite alteration in Sicker Group volcanic and volcaniclastic rocks.

Locally, mineralization consists of finely disseminated pyrite along foliation planes, fractures, as replacement of mafic minerals in altered volcanic and volcaniclastics rocks and associated with quartz and calcite veining. Minor chalcopyrite, pyrrhotite and/or magnetite and some hematite, were also noted. Chalcocite and malachite have been observed in grab samples.

In 1986, Nexus Resources and Reward Resources completed a program of geological mapping, prospecting and rock and silt geochemical sampling. Rock sampling of fault breccia yielded values up to 327 parts per million copper (in sample 534). Other samples of cherty tuff assayed up to 2.6 parts per million silver, 294 parts per million chromium and 8510 parts per million phosphorous (Assessment Report 15557).

In 2009 and 2011, P. Saulnier completed programs of prospecting and soil geochemical sampling on the area as the Horn Lake and Bitterroot properties.