igneous
Graphic Granite
Alkali feldspar-quartz pegmatite
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale, pink to tan color with dark smoky-gray or black cuneiform quartz intergrowths, vitreous luster, lacks distinct crystal faces for the aggregate.
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Physical properties
Hardness of 6-7 on Mohs scale, pink to tan color with dark smoky-gray or black cuneiform quartz intergrowths, vitreous luster, lacks distinct crystal faces for the aggregate.
Formation & geological history
Formed from the slow cooling of silica-rich magma in pegmatite dikes, allowing simultaneous crystallization of quartz and feldspar.
Uses & applications
Used primarily as an ornamental stone, in decorative carvings, and as a popular specimen for mineral collectors.
Geological facts
The distinctive graphic text-like markings are caused by quartz crystals growing within a feldspar host in specific crystallographic orientations.
Field identification & locations
Easily identified by its rune-like or cuneiform dark quartz patterns embedded in pink or white feldspar; found globally in pegmatite-rich regions.
