mineral
Quartz
Silicon Dioxide (SiO2)
Hardness: 7 on Mohs scale, Color: Colorless, white, or translucent, Luster: Vitreous (glassy), Crystal Structure: Trigonal, Cleavage: None, Specific Gravity: 2.65
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Physical properties
Hardness: 7 on Mohs scale, Color: Colorless, white, or translucent, Luster: Vitreous (glassy), Crystal Structure: Trigonal, Cleavage: None, Specific Gravity: 2.65
Formation & geological history
Formed in a wide range of environments including igneous, metamorphic, and sedimentary rocks, often crystallizing from silica-rich hydrothermal solutions or magmas.
Uses & applications
Used in electronics, glassmaking, abrasives, gemstones, and ornamental carvings.
Geological facts
Quartz is one of the most abundant minerals in Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electric charge under mechanical stress.
Field identification & locations
Easily identified by its conchoidal fracture, lack of cleavage, and high hardness (scratches glass). Found worldwide.
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Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Soil with Mineral Detritus and Quartz Fragments
Regolith / Silicate Mineral Aggregate
sedimentary
Limonite / Goethite (Iron Ore Mineral nodule)
FeO(OH)·nH2O / FeO(OH)
mineral
Septarian Pebble
Septarian nodule / Concretion
sedimentary
Schist
Schist
Metamorphic
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral