Preferential Formation of Chlorate over Perchlorate on Mars Controlled by Iron Mineralogy

Perchlorate (ClO 4 − ) and possibly chlorate (ClO 3 − ) are considered to be ubiquitous on Mars 1 – 5 , and the ClO 3 − /ClO 4 − abundance ratio has critical implications for the redox conditions 6 , 7 , aqueous environments 8 , 9 and habitability on Mars 10 . However, factors that control the ClO 3...

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