mineral

Iron-stained quartz pebble

Quartz (SiO₂), with iron-oxide staining and possible minor host-rock inclusions

AI-generated identification · may be incorrect

Opaque to translucent cream, honey-brown, and rusty-orange areas; vitreous to dull surface, irregular fracture, no obvious cleavage. Quartz hardness is 7 Mohs; the rounded shape suggests natural water wear.

Identified October 11, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed as quartz in a vein or quartz-rich rock, then weathered and rounded during transport by water. Quartz is widespread in rocks of many geological ages; the image alone cannot determine its precise age or source.

Uses & applications

Quartz is used in glass, electronics, abrasives, and decorative stone; this pebble is mainly suitable for collecting or display.

Geological facts

The orange-brown coloration commonly comes from iron oxides such as limonite or hematite coating or staining the quartz.

Field identification & locations

Look for a glassy sheen, hardness sufficient to scratch ordinary glass, and absence of cleavage; iron staining often follows cracks and surface pits. Quartz pebbles occur in stream and beach gravels worldwide.