Experiments have shown that graphic granite texture is derived from large single crystals of quartz and feldspar interleaving to create the cuneiform illusion.
2.
Micrographic differs from graphic granite in being so much finer-grained that the texture can only be seen in a petrographic thin section with a microscope.
3.
"' Graphic granite "'is a leucocratic granitic rock consisting of alkali feldspar with exsolved quartz typically forming a distinctive repetitive pattern sometimes resembling cuneiform writing.
4.
The word pegmatite derives from Homeric Greek, ??????? ( " pegnymi " ), which means to bind together , in reference to the intertwined crystals of quartz and feldspar in the texture known as graphic granite.
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