Sample 82MW0013 is an unfoliated granite comprised
of K-feldspar (40%), quartz (33%), plagioclase (25%), muscovite (1%),
and trace oxides and epidote. Perthitic K-feldspar shows tartan twins
and variable grain size (0.05-4 mm). Quartz grains, occurring in the
matrix, are variable in size and have few subgrains and relatively
straight grain boundaries. Muscovite occurs in the matrix and in some
grains shows wavy or folded mineral cleavage. In general, this rock is
less altered than most granites in the study area.