View Full Version : Rare Mineral Points To Martian Water History

2011-Oct-21, 12:40 AM
No. This isn’t an ancient raisin sponge cake you found at the back of your breadbox. It’s a closeup of a rare mineral called jarosite… a hydrated iron sulfate composite which takes on some very specific properties when it is exposed to a wet environment. It was discovered here on Earth in 1852 in ravines [...]

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