Greenschist, Biotite zone (Sample Q)

The assemblage is Chl + Ep + Act + Ab + Cal + Qtz + Spn.
The rocks is schistose and has a fine banding in which layers of green chlorite and high relief yellowish epidote alternate with lighter bands consisting dominantly of albite with calcite and fine green needles (almost indistinguishable at this scale) of actinolite amphibole. The very high relief mineral forming an elongate aggregate near the centre of the field of view is sphene (titanite). The opaque mineral (rectangles and triangles) is probably pyrite.

Field of view is 3.5 mm wide.