metamorphic
Quartzite pebble
Quartzite
AI-generated identification · may be incorrectHardness 7, yellowish-orange to brownish color (due to iron oxide staining), sugary texture, massive structure, lacks foliation.
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Physical properties
Hardness 7, yellowish-orange to brownish color (due to iron oxide staining), sugary texture, massive structure, lacks foliation.
Formation & geological history
Formed from the metamorphism of pure quartz sandstone under high heat and pressure, often found in stream beds and beaches due to weathering and rounding.
Uses & applications
Used in construction, decorative stone, and sometimes as a minor abrasive. This specimen is a typical river or beach stone.
Geological facts
Quartzite is very resistant to chemical weathering and often forms ridges and resistant hilltops.
Field identification & locations
Identified by its hardness (scratches glass), granular but fused texture, and lack of reaction to acid. Very common in alluvial deposits.
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