mineral
Quartz (Pink/Rose or Hematinoid Quartz)
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale; color ranges from white, clear, to pink, peach, or reddish-brown due to inclusions; vitreous to greasy luster; crystal structure is trigonal; conchoidal fracture with no true cleavage; specific gravity is 2.65.
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Physical properties
Hardness of 7 on the Mohs scale; color ranges from white, clear, to pink, peach, or reddish-brown due to inclusions; vitreous to greasy luster; crystal structure is trigonal; conchoidal fracture with no true cleavage; specific gravity is 2.65.
Formation & geological history
Forms in a wide variety of geological environments, frequently crystallizing from silica-rich hydrothermal veins, pegmatites, and igneous rocks like granite, as well as metamorphic and sedimentary rocks.
Uses & applications
Used in electronics, oscillators, glassmaking, abrasive materials, and as gemstones or lapidary specimens.
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 electrical charge in response to applied mechanical stress.
Field identification & locations
Identified by its high hardness (scratches glass), lack of cleavage, and conchoidal fracture. Common worldwide in gravel beds, riverbeds, and mountainous regions.
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