Interbedded greywacke, small-pebble conglomerate and argillite with minor limestone lenses of the Mississippian an older Bridge River Complex (Group) trend northwest and dip moderately southwest. Serpentinized peridotite lies conformably beneath the sediments; the contact is irregular and sheared and contains white calcite veining. The peridotite is lens-shaped covering an area 3600 metres by 1050 metres. A few small albitized diorite dykes intrude the peridotite.

The asbestos is cross-fibre chrysotile occurring in thin, irregular discontinuous veinlets in multi-directional fractures in the serpentinized peridotite. The widest vein found is 8 milli- metres; most of the asbestos is concentrated in a zone along the south contact of the peridotite mass. Outside this zone, the occurrences are patchy and scattered.

The same area was probably covered by the "Jade" claims (Minister of Mines Annual Report 1962, page 23).