Iron Concretion look-alikes
Goethite/Limonite (Iron Oxide/Hydroxide)
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Open the appSeveral rocks and minerals can be confused with Iron 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
Hematite
Fe2O3
Also known as: Red Iron Ore, Kidney Ore
Siderite
FeCO3
Also known as: Iron Carbonate
Pyrite
FeS2
Also known as: Fool's Gold
Manganese Nodules
(Mn,Fe,Ni,Cu,Co)O2·nH2O
Also known as: Ferromanganese Nodules
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