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.
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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.
Formation & geological history
Formed when mineral-rich groundwater deposits silica inside hollow cavities of sedimentary or volcanic rocks over millions of years.
Uses & applications
Widely used in jewelry, ornamental decor, metaphysical practices, and as a popular specimen for mineral collectors.
Geological facts
Geodes start as tiny bubbles in rock or animal burrows; over time, silica-bearing solutions coat the inside with sparkling quartz crystals.
Field identification & locations
Easily identified by its rough outer nodule shell contrasted with a hollow, crystal-lined interior. Found globally, notably in Brazil, Mexico, and the USA.
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