mineral
Milky quartz pebble
Quartz (SiO₂)
AI-generated identification · may be incorrectA small, rounded, opaque white to pale-gray piece with a vitreous-to-dull luster. Quartz has a hardness of 7, a hexagonal crystal structure, no cleavage, and specific gravity of about 2.65; the image does not reveal internal details clearly.
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Physical properties
A small, rounded, opaque white to pale-gray piece with a vitreous-to-dull luster. Quartz has a hardness of 7, a hexagonal crystal structure, no cleavage, and specific gravity of about 2.65; the image does not reveal internal details clearly.
Formation & geological history
Likely a naturally weathered quartz fragment, broken from quartz-rich rock and rounded by transport in water or sediment. Quartz forms in many geological settings and occurs in rocks of widely varying ages.
Uses & applications
Quartz is used in glassmaking, electronics, construction aggregates, and ornamental objects; this small pebble is mainly suitable for collecting or crafts.
Geological facts
Quartz is one of Earth’s most abundant minerals. Its resistance to weathering allows quartz pebbles to persist in river and beach deposits.
Field identification & locations
Look for hardness—quartz can scratch glass—and its lack of cleavage; a fresh break is typically uneven and may show a glassy sheen. Common worldwide in river gravels, beaches, and quartz veins.
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Gneiss or Schist
Gneiss or Mica Schist with Garnet
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)
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Septarian Pebble
Septarian nodule / Concretion
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