sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, transparent to white color, vitreous luster, and trigonal crystal system.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to white color, vitreous luster, and trigonal crystal system.
Formation & geological history
Formed through the precipitation of silica-rich groundwater inside hollow cavities of sedimentary or volcanic rocks over millions of years.
Uses & applications
Used extensively in specimen collecting, jewelry crafting, lapidary arts, and metaphysical practices.
Geological facts
Geodes form when mineral-rich water enters a hollow cavity in a host rock, slowly depositing crystals layer by layer.
Field identification & locations
Easily identified by their rounded, rough exterior shell and sparkling crystalline interior cavity when broken open; found globally in limestone and basalt formations.
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