CRISM: Aluminum phyllosilicates in Mawrth Vallis

Aluminum phyllosilicates in Mawrth VallisThis image is located right along the dichotomy boundary within a drainage channel named Mawrth Vallis. Here we see aluminum phyllosilicates (cyan to blue) exposed on the rim of a crater. Phyllosilicates are clay and clay-like minerals formed by chemical reactions with liquid water. They are very thin (microscopic) stacked layer crystal forms, also called sheet silicates… [More at link]

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