sedimentary
Banded Agate
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale with a waxy to vitreous luster and distinct concentric color banding. It exhibits conchoidal fracture and a specific gravity of around 2.65.
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Physical properties
Hardness of 7 on the Mohs scale with a waxy to vitreous luster and distinct concentric color banding. It exhibits conchoidal fracture and a specific gravity of around 2.65.
Formation & geological history
Formed through the deposition of silica-rich groundwater solutions in cavities of pre-existing rocks, primarily volcanic, over millions of years.
Uses & applications
Widely used in ornamental jewelry, carved decorative objects, and favored by mineral collectors.
Geological facts
Agate banding records ancient environmental conditions and fluid composition changes during the rock's long growth process.
Field identification & locations
Easily identified by its translucent bands and high hardness, commonly found worldwide in volcanic rock vesicles and stream gravels.
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