Rock Identifier
Small white shell fragment (Calcium-carbonate shell, likely aragonite or calcite; exact organism undetermined) — fossil
fossil

Small white shell fragment

Calcium-carbonate shell, likely aragonite or calcite; exact organism undetermined

AI-generated identification · may be incorrect

Cream-white, smooth, curved, and apparently nonmetallic. Shell hardness is typically about 3–4 Mohs; the image does not show enough detail to determine crystal structure or specific gravity.

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Physical properties

Cream-white, smooth, curved, and apparently nonmetallic. Shell hardness is typically about 3–4 Mohs; the image does not show enough detail to determine crystal structure or specific gravity.

Formation & geological history

Likely part of a mollusk shell formed in a marine or freshwater environment; its age and whether it is fossilized cannot be established from the image.

Uses & applications

No evident industrial or jewelry use; of minor interest as a shell or natural-history specimen.

Geological facts

Many shells consist mainly of calcium carbonate, commonly in the mineral forms aragonite or calcite.

Field identification & locations

The curved, shell-like shape supports identification as a fragment, but close inspection for growth lines, interior features, and a fresh broken surface would help confirm it. Shells occur in beaches, river deposits, and sedimentary rocks.

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Weathered fossil bone fragment (identification uncertain)

Fossilized bone; exact taxon and mineral composition cannot be determined from the image

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