Granulite

Picture and comment  from the website of  ChristianTeyssier,  (Department of Geology and Geophysics University of Minnesota):
"Anorthosite metamorphosed in the granulite facies, Ceilidh Hill, central Australia. Associated gabbro
contains orthopyroxene and clinopyroxene. The texture is granoblastic. The bytownite plagioclase grains
exhibit polysynthetic twins that terminate within the grains defining them as secondary twins. Some egrains show significant lattice rotation across sharp deformation bands. (Sample CH 1) (3.2 mm)