igneous
Graphic Granite
Pegmatitic Granite
AI-generated identification · may be incorrectHardness 6-7 on the Mohs scale, with a vitreous to pearly luster. Features distinct cuneiform or runic intergrowths of quartz and alkali feldspar.
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Physical properties
Hardness 6-7 on the Mohs scale, with a vitreous to pearly luster. Features distinct cuneiform or runic intergrowths of quartz and alkali feldspar.
Formation & geological history
Formed through the extremely slow cooling of volatile-rich magma in pegmatite dikes, allowing large, intergrown crystals to develop.
Uses & applications
Used primarily as an ornamental stone, in lapidary arts, and as a popular educational specimen for geology collectors.
Geological facts
The name comes from the micrographic texture that strikingly resembles ancient cuneiform or graphic writing.
Field identification & locations
Identified easily by the dark triangular or runic quartz blades embedded within a lighter feldspar matrix; found globally in pegmatite provinces.
