mineral
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, milky white to translucent color, vitreous to greasy luster, trigonal crystal system, lacks cleavage with conchoidal fracture, specific gravity around 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, milky white to translucent color, vitreous to greasy luster, trigonal crystal system, lacks cleavage with conchoidal fracture, specific gravity around 2.65.
Formation & geological history
Formed through crystallization from silica-rich solutions or cooling magmas, later weathered, eroded, and smoothed by water action in rivers or beaches over millions of years.
Uses & applications
Used in landscaping, decorative stone, glass manufacturing, abrasives, and amateur rock collecting.
Geological facts
Quartz is one of the most abundant and durable minerals in Earth's continental crust, highly resistant to both chemical and physical weathering.
Field identification & locations
Found globally in almost all geological environments; easily identified by its high hardness (scratches glass) and lack of cleavage.
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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