mineral
Quartz (Tumbled)
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale. Color ranges from white to translucent milky white, sometimes with yellowish iron staining. Luster is vitreous to greasy. Crystal structure is trigonal (hexagonal system). Conchoidal fracture, 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 to translucent milky white, sometimes with yellowish iron staining. Luster is vitreous to greasy. Crystal structure is trigonal (hexagonal system). Conchoidal fracture, no true cleavage. Specific gravity is 2.65.
Formation & geological history
Forms in a wide variety of geological environments, most commonly in igneous rocks like pegmatites and granites, as well as hydrothermal veins and sedimentary deposits. Geological age varies widely from Precambrian to recent formations.
Uses & applications
Used in gemstone and lapidary work, decorative items, electronics, and oscillators due to its piezoelectric properties.
Geological facts
Quartz is one of the most abundant and widely distributed minerals on the Earth's surface, serving as a primary component of many rocks.
Field identification & locations
Easily identified by its hardness (scratches glass), conchoidal fracture, and lack of cleavage. Commonly found worldwide in riverbeds, beaches, and mineral veins.
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