Ironstone concretion look-alikes

Ironstone concretion

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Several rocks and minerals can be confused with Ironstone concretion. Below are documented look-alikes and the features that tell them apart. Never rely on a single feature. Always check multiple properties.

Similar rocks to compare

Manganese concretion

Also known as: Manganese nodule

Calcareous concretion

Also known as: Limestone concretion

Chert nodule

Chert concretion

Also known as: Flint nodule

Siderite

FeCO3

Also known as: Iron carbonate

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Full guide to Ironstone concretion

Identification

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