mineral
Quartz Geode
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, transparent to translucent with vitreous luster, trigonal crystal system, and no cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to translucent with vitreous luster, trigonal crystal system, and no cleavage.
Formation & geological history
Formed when silica-rich groundwater precipitates crystals inside hollow cavities of sedimentary or volcanic rocks over millions of years.
Uses & applications
Used extensively in specimen collecting, jewelry, and metaphysical healing practices.
Geological facts
Geodes form outward from the cavity walls, often resulting in spectacular crystal lined interiors.
Field identification & locations
Easily identified by their rounded, nodular exterior and sparkling crystal interior when cracked open.
