
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 hexagonal crystal system.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to white color, vitreous luster, and hexagonal crystal system.
Formation & geological history
Formed through the deposition of silica-rich groundwater inside hollow cavities of volcanic or sedimentary rocks over millions of years.
Uses & applications
Used in gemstone jewelry, decorative display specimens, and industrial quartz oscillators.
Geological facts
Geodes start as bubbles in volcanic rock or animal burrows in sedimentary layers that slowly fill with mineral crystals.
Field identification & locations
Identified by its rough, rounded exterior and sparkling crystal interior when cracked open; globally distributed in volcanic regions.