mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Hardness: 7 on the Mohs scale, Color: Whitish with yellow-brown to reddish-orange iron oxide staining, Luster: Vitreous to greasy, Crystal Structure: Trigonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
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Physical properties
Hardness: 7 on the Mohs scale, Color: Whitish with yellow-brown to reddish-orange iron oxide staining, Luster: Vitreous to greasy, Crystal Structure: Trigonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
Formation & geological history
Formed in hydrothermal veins, pegmatites, and various igneous, metamorphic, and sedimentary rock environments through the precipitation of silica from aqueous solutions.
Uses & applications
Used in electronics, optical instruments, glassware, gemstones, and as an industrial abrasive.
Geological facts
Quartz is one of the most abundant minerals in Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electrical charge under mechanical stress.
Field identification & locations
Easily identified by its high hardness (scratches glass) and conchoidal fracture. Commonly found worldwide in almost all geological environments.
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