mineral
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale, Color: White to off-white, Luster: Vitreous to dull due to weathering, Crystal Structure: Trigonal, Cleavage: None, Specific Gravity: 2.65
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Physical properties
Hardness: 7 on Mohs scale, Color: White to off-white, Luster: Vitreous to dull due to weathering, Crystal Structure: Trigonal, Cleavage: None, Specific Gravity: 2.65
Formation & geological history
Forms primarily in hydrothermal veins and igneous, metamorphic, and sedimentary rocks. This specimen is a weathered, water-worn pebble found in a sedimentary or alluvial environment.
Uses & applications
Used in landscaping, decorative aggregates, glassmaking, electronics, and lapidary work.
Geological facts
Quartz is one of the most abundant and durable minerals in the Earth's continental crust, highly resistant to both chemical and mechanical weathering.
Field identification & locations
Can be identified by its high hardness (scratches glass), lack of cleavage, and conchoidal fracture. Common worldwide in riverbeds, beaches, and gravel deposits.
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Other mineral specimens
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
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary