A 76 to 90-metre wide band of limestone outcrops on Lot 1275 on the east side of Sandell Bay, 25 kilometres up Rivers Inlet. The limestone is bounded to the west by schist and to the east by diabase, within a granitic roof pendant of the Tertiary-Jurassic Coast Plutonic Complex. The band strikes 155 degrees for at least 460 metres.

The carbonate mass is composed of medium-grained, light bluish grey and white, thinly bedded to massive, high calcium limestone containing a trace of disseminated pyrite and a few lenticular beds of siliceous limestone. Two chip samples taken in succession across the east half and west half of the deposit averaged 54.59 per cent CaO, 0.43 per cent MgO, 0.71 per cent SiO2, 0.14 per cent Al2O3, 0.24 per cent Fe2O3 and nil sulphur (Canada Bureau of Mines Report 811, page 175, Samples 28, 28A).