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 when silica-rich groundwater precipitates crystals inside hollow cavities of sedimentary or volcanic rocks over millions of years.
Uses & applications
Used in decorative items, jewelry, crystal healing, and industrial applications requiring pure silica.
Geological facts
Geodes appear as ordinary, unassuming rocks on the outside, but cracking them open reveals stunning crystalline interiors.
Field identification & locations
Identify in the field by looking for rounded, knobby nodules that feel unusually lightweight for their size; common globally, particularly in limestone formations.
