Marble from a small quarry located on the east shore of Kootenay Lake opposite Kaslo, was used to construct the Nelson City Hall, courthouse and Government building and the Kaslo and Grand Forks Government buildings. The stone varies in colour from white to blue-grey, is coarse-grained (greater than 5 and up to 16 millimetres) and contains tremolite which has a tendency to turn yellow with time.

The quarry is 13 metres long by 14 metres across by 8.5 metres high. Joints are irregular, striking between 0 and 90 degrees with dips varying from 60 to 90 degrees northwest. Remnant bedding strikes 320 degrees and dips 35 to 40 degrees southwest. Eighty-five per cent of the joints and fractures measured are spaced wider than 50 centimetres apart. Potential reserves of marble, similar to the stone in the quarry extend north parallel to the lakeshore. No production figures are available.