mineral
Quartz Boulder
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, white to clear color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.
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Physical properties
Hardness of 7 on Mohs scale, white to clear color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.
Formation & geological history
Forms primarily from hydrothermal veins and cooling magma chambers, occurring across a wide geological timescale from Precambrian to recent.
Uses & applications
Used extensively in electronics, glassmaking, abrasives, and as decorative landscape or lapidary stones.
Geological facts
Quartz is one of the most abundant minerals in Earth's continental crust and exhibits strong piezoelectric properties.
Field identification & locations
Easily identified in the field by its high hardness (scratches glass) and lack of cleavage; found globally in pegmatites and metamorphic veins.
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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
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous