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1-16 of 16 possibilities

metamorphic rock composed chiefly of amphibole and plagioclase amphibolite
dark brown to black mica found in igneous and metamorphic rock biotite
brown or yellow-green olivine found in igneous and metamorphic rocks and used as a gemstone chrysolite
thin layer or stratum of (especially metamorphic) rock folium
laminated metamorphic rock similar to granite gneiss
fine-grained metamorphic rock formed by the action of heat on clay rocks hornfels , hornstone
weakly magnetic black mineral found in metamorphic and plutonic rocks; an iron titanium oxide in crystalline form; a source of titanium ilmenite
hard crystalline metamorphic rock that takes a high polish; used for sculpture and as building material marble
metamorphic rock with approximately the same composition as marl marlite , marlstone
any of a group of crystalline silicate mineral common in igneous and metamorphic rocks pyroxene
hard metamorphic rock consisting essentially of interlocking quartz crystals quartzite
mineral consisting of titanium dioxide in crystalline form; occurs in metamorphic and plutonic rocks and is a major source of titanium rutile
rare light blue or green mineral; consists of aluminum and magnesium silicate and occurs as small grains in some metamorphic rocks sapphirine
any metamorphic rock that can be split into thin layers schist
fine-grained metamorphic rock that can be split into thin layers slate
white or greyish mineral typically found in metamorphic limestone; a silicate of calcium wollastonite
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