mineral
Iron-stained quartz or quartzite pebble
Quartz (SiO₂), possibly quartzite with hematite/goethite staining
AI-generated identification · may be incorrectHardness 7; orange-brown to reddish color, vitreous-to-dull luster, massive granular texture, and no obvious cleavage. The rounded shape suggests natural abrasion or tumbling; apparent translucence may be obscured by iron staining.
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Physical properties
Hardness 7; orange-brown to reddish color, vitreous-to-dull luster, massive granular texture, and no obvious cleavage. The rounded shape suggests natural abrasion or tumbling; apparent translucence may be obscured by iron staining.
Formation & geological history
Likely formed in silica-rich igneous, metamorphic, or hydrothermal material and later weathered, with iron oxides coating or penetrating the surface. Its precise geological age and provenance cannot be determined from the photograph.
Uses & applications
Common quartz and quartzite are used as aggregate, abrasives, glass and ceramic raw material, and ornamental stone; attractive pieces may be collected or used in craft jewelry.
Geological facts
Orange coloration commonly comes from hematite or goethite rather than the quartz itself. A steel file should not scratch quartz, while quartz can scratch ordinary glass.
Field identification & locations
Common in stream gravels, soils, quartz veins, and weathered quartzite terrains worldwide; verify with a streak, hardness, and magnification. The image alone cannot exclude orange jasper or another iron-rich silicate.
