mineral
Milky quartz pebble
Quartz (silicon dioxide, SiO₂)
AI-generated identification · may be incorrectSmooth, rounded, opaque white to pale gray with a vitreous-to-waxy luster; Mohs hardness 7, trigonal crystal structure, no cleavage, and conchoidal fracture. The photograph does not show enough detail to confirm identification.
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Physical properties
Smooth, rounded, opaque white to pale gray with a vitreous-to-waxy luster; Mohs hardness 7, trigonal crystal structure, no cleavage, and conchoidal fracture. The photograph does not show enough detail to confirm identification.
Formation & geological history
Likely a water-worn quartz pebble weathered from quartz veins or quartz-rich rock; quartz forms in many geological settings and occurs in rocks of a wide range of ages.
Uses & applications
Quartz is used in glassmaking, electronics, abrasives, and decorative stone; this small pebble is mainly suitable for collecting or crafts.
Geological facts
Quartz is one of Earth’s most abundant minerals and is notably resistant to weathering, allowing pebbles to persist through transport.
Field identification & locations
A likely quartz pebble is identified by its hardness, lack of cleavage, and glassy fracture; white quartz is widespread in river gravels and on beaches. A scratch or streak test would help distinguish it from softer white stones.
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Gneiss or Schist
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Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
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Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary