sedimentary
Quartz-veined Sandstone
Quartzite-veined Arenite (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale. Colors range from brown host rock with a stark white quartz vein. Vitreous to dull luster with no distinct cleavage.
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Physical properties
Hardness of 7 on the Mohs scale. Colors range from brown host rock with a stark white quartz vein. Vitreous to dull luster with no distinct cleavage.
Formation & geological history
Formed via hydrothermal precipitation where silica-rich fluids filled fractures in pre-existing sedimentary rock, dating across various geological eras.
Uses & applications
Primarily collected as a geological curiosity or lapidary display specimen due to its striking natural contrast.
Geological facts
Differential weathering often causes the harder quartz vein to stand out in relief against the softer surrounding matrix.
Field identification & locations
Easily identified by the stark white mineral intrusion cutting through a weathered brown sedimentary base; found globally in quartz-rich tectonic zones.
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