Description :
Photomicrograph of metapeltic siltstone of the Mollie Creek assemblage, hanging wall to the Kettle River fault near Christina Lake, B.C. Located in the contact aureole of the Nelson granitoid suite, the peak metamorphic assemblage is Crd+And-bearing, with andalusite found as small grains between larger cordierite porphyroblasts. Cordierite preserves an old, unoriented matrix (as shown by biotite inclusions), while inclusions in andalusite record the latest foliation.