mineral
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
Hardness 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
Forms in hydrothermal veins, pegmatites, and as a secondary mineral in sedimentary rocks from silica-rich solutions
Uses & applications
Used in electronics, watchmaking, glassware, abrasives, and as a mineral specimen for collectors
Geological facts
Quartz is one of the most abundant minerals in the 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 high hardness (scratches glass), lack of cleavage, and characteristic crystal form; found worldwide in almost all geological environments
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Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Soil with Mineral Detritus and Quartz Fragments
Regolith / Silicate Mineral Aggregate
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Limonite / Goethite (Iron Ore Mineral nodule)
FeO(OH)·nH2O / FeO(OH)
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Septarian Pebble
Septarian nodule / Concretion
sedimentary
Schist
Schist
Metamorphic
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral