mineral
Quartz Geode
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, transparent to white color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to white color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.
Formation & geological history
Formed when mineral-rich hydrothermal fluids precipitate silica within hollow cavities of sedimentary or volcanic rocks over millions of years.
Uses & applications
Used in decorative items, lapidary arts, metaphysical collections, and as a source of industrial silica.
Geological facts
Geodes start as hollow bubbles in rock or animal burrows where silica-laden groundwater slowly deposits crystals inward from the walls.
Field identification & locations
Easily identified by its rough exterior nodule shape combined with a sparkling crystalline interior cavity when broken open. Found globally.
