amphibolite metamorphic rock texture

abstract amphibole amphibolite assemblage background black block bright broken brown building chipped closeup coarse construction crack cut damaged detail erosion exterior feldspar flat gothic grain granite grey ground grunge hard heavy layer light line macro massive material metallic metamorphic mineral natural obsolete old orange ordinary part pattern realistic rock rough ruin rust rustic schist shatter side solid spotted stain stone structure surface texture topdown typical used wall wallpaper watered weathered yellow