igneous
Graphic Granite
Alkali-feldspar quartz pegmatite
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale, with a vitreous to greasy luster and distinct cuneiform quartz intergrowths resembling ancient runes.
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Physical properties
Hardness of 6-7 on Mohs scale, with a vitreous to greasy luster and distinct cuneiform quartz intergrowths resembling ancient runes.
Formation & geological history
Formed from the slow cooling of silica-rich magma in pegmatite dikes during the late stages of igneous crystallization.
Uses & applications
Used primarily as an ornamental stone, in lapidary arts, and as a popular specimen for mineral collectors.
Geological facts
The unique graphic texture is caused by simultaneous crystallization of quartz and feldspar from a melt, creating runic patterns.
Field identification & locations
Easily identified in the field by its distinct dark quartz script-like markings embedded within a pale feldspar matrix.
