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Fraser
2011-Sep-22, 05:50 PM
Although it might seem like a fictitious nomenclature, smectite is a real substance and it’s been found on Mars. It’s a clay mineral that, like a sponge, expands and contracts as it takes on liquid water. With magnesium, iron, aluminum and silica in their content, smectites are morphed into being when silicates are exposed to [...]

More... (http://www.universetoday.com/89133/martian-clay-a-vessel-for-water/)

ravens_cry
2011-Sep-22, 08:56 PM
Rather evil title for the article, as fascinating as it is.
Scrolling speedily down the subforum list makes it read "Martian Clay Vessel for Water?"
Definitely double take inducing.