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Fossiliferous Siltstone

Fossiliferous Siltstone, also known as Arabic Writing Stone, Mariam Stone, Elephant Skin Jasper, and many others. It is a sedimentary rock mostly made up of silt-sized particles. silt* has been compacted into rock by water, wind, or ice. Some may contain small fossils within the stone.

*Silt is loose granular particles.

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