described the chemical weathering rates as one of the highest rates ever observed, when compared to landscapes across the globe. The study, "Pyrite oxidation drives exceptionally high weathering ...

Here we present chemical weathering rates determined for Mars. We use the oxidation of iron in stony meteorites investigated by the Mars Exploration Rover Opportunity at Meridiani Planum.

Mössbauer spectroscopy is used to quantify how much iron exists in what oxidation states in a sample ... microbes have a direct effect on rock weathering—that bacteria oxidize iron, leading ...