Blades of kyanite and prisms of staurolite occur together at one locality on the west flank of Mount Mackenzie, southeast of Revelstoke. They appear as subhedral crystals from 0.3 to 2.5 centimetres long with random orientation in layers of muscovite schist, intercalated with muscovite gneiss and quartzite. The hostrocks belong to the Lower Paleozoic Broadview Formation (Lardeau Group).