Garnet zone (Sample
is Grt + Bt + Chl + Ms + Qtz.
Garnet porphyroblasts showing good crystal shape
grow over a strong schistosity defined by white
mica flakes, which has been gently crenulated.
Biotite occurs, like garnet, as porphyroblasts. The
small dark elongate grains in the matrix are
high-relief epidote prisms and grains of a tabular
opaque mineral (ilmenite).
Field of view
is 3 mm wide.