igneous
Quartz-veined Igneous Rock
Silicate-rich igneous rock with quartz vein
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale, earthy green-brown matrix with a distinct white quartz vein, vitreous to dull luster, cryptocrystalline to phaneritic structure.
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Physical properties
Hardness of 6-7 on Mohs scale, earthy green-brown matrix with a distinct white quartz vein, vitreous to dull luster, cryptocrystalline to phaneritic structure.
Formation & geological history
Formed via cooling and solidification of molten magma, subsequently fractured and hydrothermally injected with silica-rich fluids.
Uses & applications
Used primarily as decorative landscape gravel, in lapidary work, and as educational geological specimens.
Geological facts
Quartz veins in host rocks often form during tectonic events when hydrothermal fluids precipitate dissolved minerals into fractures.
Field identification & locations
Identify in the field by the strong color contrast of the white mineral vein cutting across the darker matrix; common in regions with volcanic and hydrothermal activity.
