fossil

Fossiliferous Limestone / Fossil Fragment

Calcium Carbonate Matrix with Biogenic Inclusions (CaCO3)

Hardness: 3 on Mohs scale (for matrix); Color: Tan, beige, reddish-brown, grey; Luster: Dull, earthy; Texture: Medium to coarse, porous with visible fossil impressions and bryozoan/shell fragments.

Hardness: 3 on Mohs scale (for matrix)
Color: Tan, beige, reddish-brown, grey
Luster: Dull, earthy

Identified July 26, 2026More fossil →

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Physical properties

Hardness: 3 on Mohs scale (for matrix); Color: Tan, beige, reddish-brown, grey; Luster: Dull, earthy; Texture: Medium to coarse, porous with visible fossil impressions and bryozoan/shell fragments.

Formation & geological history

Formed in warm, shallow marine environments through the accumulation and compaction of organic debris, shell fragments, and skeletal remains of marine organisms over millions of years.

Uses & applications

Used in educational collections, geological studies, landscaping, decorative stone, and historical architectural materials.

Geological facts

Fossiliferous rocks act as natural time capsules, recording ancient aquatic ecosystems and climate conditions from millions of years ago.

Field identification & locations

Identify by looking for visible skeletal fragments, shell imprints, or biological textures in a fine-grained calcitic matrix that effervesces with dilute acid. Common in ancient sedimentary basins worldwide.

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