The Lacey Lake occurrence is located south west of Horn Lake, approximately 600 metres north- north east of Lacey Lake.

The area is underlain by north west trending volcanic-volcaniclastic-sedimentary rocks of the Devonian Sicker and Mississippian to Permian Buttle Lake groups and are bounded by younger mafic volcanics of the Vancouver Group and sediments of the Nanaimo Group. The Sicker Group stratigraphy is very complex with numerous intercalations and rapid lateral facies changes. The rocks are commonly schistose with associated carbonate and silica alteration in the vicinity of faults.

The showing occurs in a chemical sedimentary unit probably within the Devonian Duck Lake Formation, which forms the base of the Sicker Group. The sedimentary rocks include grey to green chert and lenses of pale red jasperoidal and manganiferous chert (taconite). The lenses are up to 50 metres thick and differ from the Cameron Lake Iron showing (092F 246) in their notable lack of magnetite and sulphides, and the paler pink to brick red colour of the jasperoidal chert. Pyrolusite occurs locally along fractures within the chert.

In 1985, Reward Resources completed a program of geological mapping and geochemical sampling on the area as the Horne 2-4 claims. In 1986. Lode Resources explored the area as the Lacey 1-4 claims. A program of rock and soil geochemical sampling, geological mapping and a ground electromagnetic and magnetic geophysical surveys were completed. A sample assayed 0.5 per cent manganese (Assessment Report 16138).