Graphic granite is a leucocratic granitic rock consisting of alkali feldspar with exsolved quartz typically forming a distinctive repetitive pattern sometimes resembling cuneiform writing. Experiments have shown that graphic granite texture is derived from large single crystals of quartz and feldspar interleaving to create the Cuneiform illusion. Usually devoid of mica. Specimens are supplied in a polythene bag in lots of 1 kg with a label.
