Sample 95MW0208 is a quartz dioritic mylonite
containing plagioclase (70%), quartz (20%), sericite (5%), K-feldspar
(2%), chlorite (2%), epidote (1%), and trace oxides and sphene.
Plagioclase is extremely seritized and shows undulose extinction. Quartz
is dramatically recrystallized to show elongated grains and micro scale
ribbon-like textures. Non-recrystallized quartz shows subgrain
development and undulose extinction. K-feldspar may be antiperthitic in
origin, and exhibits tartan twinning in larger grains. Chlorite probably
has replaced biotite. Sphene shows brittle fracturing, which probably
occurred during mylonitization.