mineral
Clear Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness 7 on Mohs scale, colorless and transparent, vitreous luster, hexagonal crystal structure, conchoidal fracture.
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Physical properties
Hardness 7 on Mohs scale, colorless and transparent, vitreous luster, hexagonal crystal structure, conchoidal fracture.
Formation & geological history
Forms in igneous rocks like pegmatites, hydrothermal veins, and as a secondary mineral in sedimentary rocks. Found worldwide in various geological ages.
Uses & applications
Used in electronics as an oscillator, in glassmaking, optics, and extensively in jewelry and lapidary arts.
Geological facts
Quartz is the most abundant mineral in the Earth's continental crust. Its piezoelectric properties make it essential in modern technology.
Field identification & locations
Identify by its hardness (scratches glass), lack of cleavage, and typical six-sided prismatic crystals terminating in a pyramid. Common globally.
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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
Calcite–fluorite mineral specimen with iron-oxide staining
Calcite (CaCO₃), likely fluorite (CaF₂), with possible quartz and iron/manganese oxides
mineral
Mineral Sand (Heavy Mineral Sand Concentrate)
Placer deposit concentrate containing minerals such as ilmenite, rutile, zircon, and magnetite
mineral
Septarian Pebble
Septarian nodule / Concretion
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic