mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white or colorless, vitreous luster, hexagonal crystal system, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically white or colorless, vitreous luster, hexagonal crystal system, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed in a wide variety of geological environments including igneous, metamorphic, and sedimentary rocks, often crystallized from silica-rich hydrothermal solutions or cooling magma.
Uses & applications
Used in electronics, glassware, precision instruments, countertops, abrasive materials, and gemstone jewelry.
Geological facts
Quartz is one of the most abundant and widely distributed minerals found on Earth's continental crust. Its piezoelectric properties make it invaluable in electronic timing and frequency control.
Field identification & locations
Easily identified by its hardness (scratches glass), lack of cleavage, and vitreous luster. Found worldwide in nearly every type of geological terrain.
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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