mineral
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 structure with conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to white color, vitreous luster, and trigonal crystal structure with conchoidal fracture.
Formation & geological history
Formed when mineral-rich groundwater deposits silica inside hollow cavities in sedimentary or volcanic rocks over millions of years.
Uses & applications
Widely used in ornamental decoration, crystal healing, and jewelry, as well as industrial applications requiring pure silica.
Geological facts
Geodes start as gas bubbles in volcanic rock or nodules in limestone that gradually line with inward-growing quartz crystals.
Field identification & locations
Identified by its outer spherical, bumpy nodular rind and sparkling inner crystal cavity; commonly found in limestone deserts and volcanic regions.
