The Burn (Crag) lead-zinc occurrence is located 16 kilometres east-northeast of Aiken Lake, approximately 97 kilometres northeast of the community of Germansen Landing.

The hostrock is a northwest striking, southeast dipping massive white limestone recently reassigned to the Lower Cambrian Atan Group (Mount Kison Formation) (Open File 1993-2). A generalized stratigraphic section (from Assessment Report 4605) is as follows:

(1) coarse grit with conglomerate lenses

(2) green chlorite schist

(3) massive white limestone

(4) grey, fine-grained dolomite

(5) siliceous dolomite capped by white quartzite

(6) pyritic, graphitic siliceous black slate

The showing is exposed in two outcrops and in trenches. It consists of narrow seams of fine-grained galena in a 1 metre wide, east striking, tan dolomitic zone which crosscuts massive white limestone. Some of the dolomitic zones are "breccia-like" with grey dolomitic fragments in a coarse dolomitic or calcitic cement. Sphalerite is minor, as is pyrite. Some cerussite was identified in polished section. In 1973, a grab sample assayed 5.0 per cent lead, 2.8 per cent zinc, 188.6 grams per tonne silver and 0.48 per cent barium (Assessment Report 4605). Barite lenses outcrop in black shale 900 metres southeast of the showing.

In 1972-73, Serem Ltd. carried out stream sediment sampling, line cutting, soil sampling, trenching and geological mapping.