mineral

Iron-stained quartz-rich pebble

Likely quartz (SiO₂) with iron-oxide/hydroxide coatings; exact rock type cannot be determined from the image alone

AI-generated identification · may be incorrect

Small, rounded, rough-grained pebble with orange-brown coloration from iron staining and a dull to slightly granular luster. Quartz has Mohs hardness 7 and a trigonal crystal structure; the specimen shows no obvious cleavage.

Identified October 13, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed as a quartz-rich rock or vein material, then weathered and rounded during transport; iron oxides stained its surface. Its geological age and original source are unknown.

Uses & applications

Small specimens are mainly collected or used decoratively; quartz-rich material also has broad industrial uses, though this pebble has no evident commercial value.

Geological facts

The orange color commonly comes from hematite or goethite rather than from the quartz itself.

Field identification & locations

Quartz’s hardness and lack of cleavage are useful clues, but a scratch test or close examination would help confirm composition. Iron-stained quartz pebbles occur widely in soils, stream beds, and gravel deposits.