fossil

Fossil gastropod shell

Fossilized marine gastropod; exact genus/species requires locality and examination

AI-generated identification · may be incorrect

Conical, spirally coiled shell with brown-and-cream banding and glossy surfaces, likely originally aragonite or calcite. Mohs hardness about 3–4; crystalline shell material may be recrystallized, with no obvious cleavage; specific gravity commonly 2.6–2.8.

Identified August 12, 2026More fossil →

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Physical properties

Formation & geological history

A marine snail shell buried in sediment and preserved through mineral replacement or infilling, probably Cenozoic or older; the photograph alone cannot establish its age. Its compact, polished appearance may reflect natural wear or human preparation.

Uses & applications

Primarily a collectible, teaching specimen, or decorative object; fossil shell material is not generally used structurally or in jewelry unless cut and polished.

Geological facts

The visible spiral and aperture-like pointed end strongly support a gastropod rather than a mineral crystal. Brown coloration commonly comes from iron oxides or organic residues preserved during fossilization.

Field identification & locations

Identify by the unmistakable spiral whorls, shell growth lines, and aperture; distinguish it from a modern shell by mineralized weight, altered texture, and lack of fresh nacre. Fossil gastropods occur worldwide in marine limestones and sandstones.