mineral
Agate Geode
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, waxy luster, conchoidal fracture, and cryptocrystalline structure with multicolored banding.
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Physical properties
Hardness of 7 on the Mohs scale, waxy luster, conchoidal fracture, and cryptocrystalline structure with multicolored banding.
Formation & geological history
Formed when silica-rich groundwater deposits microcrystalline quartz in cavities of volcanic or sedimentary rocks over millions of years.
Uses & applications
Used primarily in ornamental carvings, jewelry making, and as sought-after collector display specimens.
Geological facts
Geodes form hollow structures where mineral-rich solutions slowly precipitate crystals inward from the cavity walls.
Field identification & locations
Identified by its distinctive exterior nodule shape, layered internal banding, and hardness capable of scratching glass.
