metamorphic
Quartz-veined Pebble
Metasediment/Quartzite with Quartz (SiO2) Vein
AI-generated identification · may be incorrectHardness around 6.5–7 on the Mohs scale, sub-vitreous to dull luster, dense, with a distinct lighter vein crossing a dark gray, rounded matrix.
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Physical properties
Hardness around 6.5–7 on the Mohs scale, sub-vitreous to dull luster, dense, with a distinct lighter vein crossing a dark gray, rounded matrix.
Formation & geological history
Formed by regional metamorphism followed by hydrothermal deposition of quartz into rock fractures, then water-rounded by fluvial or coastal erosion.
Uses & applications
Commonly used in landscaping, decorative stone arrangements, aggregate in construction, and general rock collecting.
Geological facts
Pebbles with complete encompassing white veins are traditionally called 'wishing stones' in coastal folklore.
Field identification & locations
Identified by a distinct, hard white or translucent quartz band cutting through a darker, water-tumbled pebble; widely found in gravel pits, riverbeds, and ocean beaches.
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