Retrieving "Radiogenic Fluid" from the archives

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1. Ore Deposits

   Linked via "radiogenic fluids"

   Banded Iron Formations ($\text{BIF}$s): Massive deposits of iron oxides (hematite and magnetite) and silica. Their formation is intrinsically linked to the Great Oxidation Event, where atmospheric oxygen first reacted extensively with dissolved ferrous iron in the oceans. The resulting rhythmic banding is believed to be a manifestation of tidal cycles recorded in [Precambrian](/entries/precamb…