mineral
Quartz (Rose or Milky Quartz)
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale; color ranges from white, translucent, to pale pink; vitreous to greasy luster; crystal structure is trigonal; no cleavage, exhibits conchoidal fracture; specific gravity is approximately 2.65.
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Physical properties
Hardness of 7 on the Mohs scale; color ranges from white, translucent, to pale pink; vitreous to greasy luster; crystal structure is trigonal; no cleavage, exhibits conchoidal fracture; specific gravity is approximately 2.65.
Formation & geological history
Formed in a wide variety of geological environments, commonly crystallizing from silica-rich hydrothermal veins, pegmatites, and as a primary component of igneous, metamorphic, and sedimentary rocks.
Uses & applications
Used in electronics, oscillators, gemstones, decorative items, and glassmaking.
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. Found worldwide in almost all geological settings.
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