Rock Identifier
Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral
mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on Mohs scale, yellowish-brown to clear coloration, vitreous luster, and hexagonal crystal structure.

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Physical properties

Hardness of 7 on Mohs scale, yellowish-brown to clear coloration, vitreous luster, and hexagonal crystal structure.

Formation & geological history

Formed through hydrothermal mineral precipitation within hollow cavities of sedimentary or volcanic rocks over millions of years.

Uses & applications

Commonly used in decorative ornamental objects, crystal healing collections, and lapidary work.

Geological facts

Geodes form when mineral-rich groundwater slowly deposits silica crystals layer by layer along the inner walls of a hollow cavity.

Field identification & locations

Identify by its distinctive outer weathered rind and sparkling crystalline interior cavity; widely found in limestone formations and volcanic regions worldwide.