mineral
Quartz with Tourmaline and Iron Staining
Silicon Dioxide (SiO2) with accessory tourmaline and limonite
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, clear to milky white with dark/black crystalline inclusions and orange-brown iron oxide staining, vitreous luster, conchoidal fracture, specific gravity of 2.65
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Physical properties
Hardness of 7 on the Mohs scale, clear to milky white with dark/black crystalline inclusions and orange-brown iron oxide staining, vitreous luster, conchoidal fracture, specific gravity of 2.65
Formation & geological history
Formed in hydrothermal veins and pegmatites, where hot mineral-rich fluids cool and crystallize within fractures of host rocks over millions of years
Uses & applications
Collected by rockhounds, used in lapidary arts, and appreciated as a mineral specimen
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 under mechanical stress
Field identification & locations
Identified by its high hardness (scratches glass), lack of cleavage, and conchoidal fracture; commonly found globally in pegmatites, quartz veins, and alluvial gravels
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Pegmatite with Tourmaline and Quartz
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Granite
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Septarian Pebble
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