A whitish, granular rock, consisting of feldspar and quartz intimately mixed; -- sometimes called whitestone, and leptynite.
A course-grained, equigranular metamorphic rock, consisting of quartz, feldspar and the anhydrous ferromagnesium minerals pyroxene and garnet.
A moderately fine grained metamorphic rock composed chiefly of quartz and feldspar, but commonly containing some garnet.
a high grade metamorphic rock with an equant texture (no foliation or lineation).
metamorphic rock with coarse interlocking grain and little or no foliation.
A high-grade metamorphic rock that typically lacks hydrous minerals like micas and amphibole.
A nonfoliated regional metamorphic rock with coarse interlocking grains, generally formed under conditions of relatively high pressure and temperature.
an almost structureless quart-feldspar rock
granular metamorphic, catazonal rock, composed of less hydrous minerals: garnet, cordierite, hypersthene.
A metamorphic rock, commonly granular in texture, which has cooled from temperatures above about 700° Centigrade
Granulites are metamorphic rocks that have experienced high temperatures of metamorphism. They typically have a granular (granoblastic) texture -- that is, a texture comprised of similarly sized and shaped grains -- and hence the name granulite. They are of particular interest to geologists because many granulites represent samples of the deep continental crust.
