Pelitic schist and gneiss of the Mesozoic Settler Schist crop out in a number of localities in the Hope-Yale-Harrison-Lytton area of southwestern British Columbia, marginal to the Scuzzy, Spuzzum and Chilliwack plutons. Locally, the schist and gneiss units contain abundant kyanite, sillimanite, andalusite and garnet.

North of Cogburn Creek, it contains up to 23 per cent kyanite porphyroblasts, which may reach 1.5 centimetres in length, and a few per cent coarse sillimanite as prisms in excess of 4 centimetres long (Lowes, B.E. (1972): Metamorphic Petrology and Structural Geology of the area east of Harrison Lake).