mineral

Small rounded light-colored mineral pebble

Indeterminate; possibly quartz, feldspar, or calcite

AI-generated identification · may be incorrect

Tiny gray-white, rounded specimen with a dull to slightly pearly luster; grain size and crystal structure are not resolvable from the blurred image. Hardness is undetermined: quartz is Mohs 7, feldspar 6, and calcite 3.

Identified September 11, 2026More mineral →

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Physical properties

Formation & geological history

Likely a naturally weathered pebble or mineral fragment produced by erosion; geological age and host environment cannot be determined visually.

Uses & applications

Primarily a curiosity or teaching specimen; no reliable industrial or jewelry value can be assigned without testing.

Geological facts

The most useful distinguishing tests are streak, hardness, cleavage, acid reaction, and magnification; appearance alone is insufficient for confident identification.

Field identification & locations

Test whether it scratches glass (possible quartz), scratches with a steel nail (softer minerals), or fizzes in dilute hydrochloric acid or vinegar (calcite, weakly). Common sources include stream gravels, soil, and crushed rock.