The exergonic reaction of FeS with H₂S to form FeS₂ (pyrite) and H₂ was postulated to have operated as an early form of energy metabolism on primordial Earth. Since the Archean, sedimentary pyrite ...

Feb. 26 (UPI) --When did Earth first acquire large amounts of oxygen? What did the planet's earliest microbial communities look like? Many of the secrets of primordial Earth -- its climate conditions ...

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The Sturtian Snowball Earth glaciation (717~660 million years ago) represents the most severe icehouse climate in Earth's history. Geological evidence indicates that, during this glaciation, ice ...

As sulfur cycles through Earth's atmosphere, oceans and land, it undergoes chemical changes that are often coupled to changes in other such elements as carbon and oxygen. Although this affects the ...

La littérature scientifique ne recense pas d’études sur le rôle joué par l’oxydation de la pyrite dans la formation de l’alun, mais quelques informations généralistes se justifient pour les ...