The Esary Lake occurrence is located south west of Horn Lake, approximately 1.3 kilometres east of Esary Lake.

The area is underlain by north west trending volcanic-volcaniclastic-sedimentary rocks of the Devonian Sicker and the Mississippian to Permian Buttle Lake groups 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 chert (taconite). The deposit is reported to be larger than the Lacy Lake (092F 245) or Cameron River (092F 246) jasper deposits which have widths up to 30 metres and lengths up to 150 metres. The deposit is described as an iron rich 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 Esary 1 claim. A program of rock and soil geochemical sampling, geological mapping and a ground electromagnetic and magnetic geophysical surveys were completed. In 2005, the area was prospected by D.J. McLelland.