Rock types made up of crystals or crystal fragments, such as metamorphic rocks that recrystallized in high temperature or pressure environments, or igneous rocks that formed from cooling of a melt
the state of a solid material characterized by a periodic and repeating three-dimensional arrays of atoms, ions, or molecules
consisting of or containing or of the nature of crystals; "granite is crystalline" transmitting light; able to be seen through with clarity; "the cold crystalline water of melted snow"; "crystal clear skies"; "could see the sand on the bottom of the limpid pool"; "lucid air"; "a pellucid brook"; "transparent cristal" distinctly or sharply outlined; "crystalline sharpness of outline"- John Buchan
transmitting light; able to be seen through with clarity; "the cold crystalline water of melted snow"; "crystal clear skies"; "could see the sand on the bottom of the limpid pool"; "lucid air"; "a pellucid brook"; "transparent cristal"