Iron-oxide concretions and nodules

Other Mineral Types - Industry, Energy and Technology

Glassy and vesicular = Slag, Some Meteorite Information

Composite ironstone concretion (Licking County, Ohio, USA)…

Iron-oxide concretions and nodules, Some Meteorite Information

What is this? Is it just burned somehow? : r/whatsthisrock

Ravenscraig: Iron to Make Steel – CultureNL Museums

Iron-Oxide Concretions and Nodules

Fe-oxide concretions formed by interacting carbonate and acidic

Three Natural Beautiful Large Xxlarge Raw Various Assorted Fairy

Found in a Kentish Vineyard : r/whatsthisrock

Ironstone nodule 3, Ironstone is an iron oxide-rich rock th…

Is this a sizeable meteorite or just a rusted bit of Iron slag? - The Astro Lounge - Stargazers Lounge