igneous
Graphic Granite
Alkali feldspar-quartz pegmatite
AI-generated identification · may be incorrectMohs hardness of 6-7. Features distinct cuneiform or runic quartz intergrowths in a pink to white potassium feldspar host with vitreous luster.
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Physical properties
Mohs hardness of 6-7. Features distinct cuneiform or runic quartz intergrowths in a pink to white potassium feldspar host with vitreous luster.
Formation & geological history
Formed via the slow cooling of water-rich silicate melts in pegmatite dikes, typically during the late stages of magmatic crystallization.
Uses & applications
Used primarily in lapidary arts, ornamental stone carving, and as educational mineral specimens.
Geological facts
The intergrown quartz crystals resemble ancient cuneiform or Hebrew writing, which gave the rock its historical name 'schriftgranit'.
Field identification & locations
Easily identified in the field by its distinct geometric, triangular, or runic dark quartz patterns embedded within massive pink feldspar.
