Ironstone
Ironstone with weathered exterior. The orange colour is caused by the presence of rusty iron oxide.
From the B. Playle collection.
Lower Jurassic: Marlstone Rock Formation,
Dry Hill Farm pit, between ...
Ironstone with weathered Brachiopod shells
Ironstone with weathered terebratulid brachiopod shells.
Collected by J. Crossling.
Lower Jurassic: Marlstone Rock Formation,
Edgehill Quarry.
Shell, Spiriferina species
Brachiopod shell, Spiriferina.
Lower Jurassic: Marlstone Rock Formation,
Edgehill Quarries.
Collected by Jon D. Radley, Keeper of Geology.