Rock Identifier
Small conical fossil shell fragment (Indeterminate gastropod or scaphopod shell; likely calcium carbonate (aragonite/calcite)) — fossil
fossil

Small conical fossil shell fragment

Indeterminate gastropod or scaphopod shell; likely calcium carbonate (aragonite/calcite)

AI-generated identification · may be incorrect

Pale gray-beige, tapered conical form with a smooth to subtly ridged surface; dull to weakly pearly luster. Likely Mohs hardness 3–4, with fragile shell walls and no identifiable crystal cleavage.

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Physical properties

Pale gray-beige, tapered conical form with a smooth to subtly ridged surface; dull to weakly pearly luster. Likely Mohs hardness 3–4, with fragile shell walls and no identifiable crystal cleavage.

Formation & geological history

Probably a marine mollusk shell or fragment preserved in sediment and later exposed; exact geological age and species cannot be determined from this blurred image. Such fossils occur in limestone, shale, and unconsolidated beach or sediment deposits.

Uses & applications

Primarily a teaching or collecting specimen; fossil shells may be used in paleontology and decorative displays, but this example has little commercial value.

Geological facts

The conical shape may represent a gastropod apex, a tusk shell (scaphopod), or a small shell fragment rather than a mineral crystal.

Field identification & locations

Confirm with sharper images showing apertures, whorls, growth lines, and internal structure; dilute hydrochloric acid may weakly effervesce if calcitic, but testing can damage it. Common in marine sedimentary rocks worldwide.