A metamorphic rock resulting from the recrystallization of limestone, comprising crystallized grains of calcite (calcium carbonate) or dolomite (calcium magnesium carbonate), or both. Also, rocks ranging from pure carbonate to those containing very little carbonate, yet having compositions and textures that permit them to be polished. (ASTM C1528) All stone here defined as marble must be capable of taking a
polish. (ASTM C119)