mineral
Red Jasper or Iron-stained Quartz
SiO2 with Fe impurities
AI-generated identification · may be incorrectHardness 6.5-7, red color from iron oxide inclusions, dull to waxy luster, conchoidal fracture
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Physical properties
Hardness 6.5-7, red color from iron oxide inclusions, dull to waxy luster, conchoidal fracture
Formation & geological history
Formed from silica-rich fluids precipitating in cracks and cavities, often colored by iron oxides during formation.
Uses & applications
Lapidary work, tumbling, ornamental use
Geological facts
Jasper is an opaque variety of chalcedony.
Field identification & locations
Identify by its hardness (scratches glass), opaque red color, and lack of cleavage.
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