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Miltiades

@moonlandingpanda-blog

crystals.reptiles.fossils
Pyritized ammonite 45mm Harpoceras
Location - Location - Aveyron,France
Age - about 190 million years
Jurassic
Millions of years ago , during the jurassic,these ammonites died in a sea that contained heavy concentrations of Iron.This iron Reacted with sulphur in the water and formed the pyrite which replaced the ammonite cell by cell