mineral
Golden druzy quartz geode
Quartz, SiO₂, lining a geode cavity; likely iron-oxide stained
AI-generated identification · may be incorrectTiny sparkling crystals with a honey-gold to cream color and vitreous luster; quartz is Mohs 7, trigonal, with no cleavage and conchoidal fracture. The color may come from iron-oxide staining or a surface treatment.
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Physical properties
Tiny sparkling crystals with a honey-gold to cream color and vitreous luster; quartz is Mohs 7, trigonal, with no cleavage and conchoidal fracture. The color may come from iron-oxide staining or a surface treatment.
Formation & geological history
Quartz crystals formed from silica-rich fluids in a hollow cavity within host rock; the photo does not establish the specimen’s age or locality.
Uses & applications
Primarily a collectible or decorative specimen; quartz is also used in glassmaking, electronics, and abrasives.
Geological facts
The interior crystal coating is called druzy; geodes form when minerals gradually line a pre-existing cavity.
Field identification & locations
Look for a hollow or partly hollow cavity lined with tightly packed, glassy crystals; quartz scratches glass. Common geode sources include Brazil, Uruguay, and the United States.
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