Space/Science — HabitableZone

Space/Science » in reply to re: Unfortunately. - BR, most, MOST of the time 'clay-like' has to do with running water with minerals.

Ummm...

Much of what BR says has some value. Although there's an embedded tautology (the active "volatile" in sulphuric acid is still water, but the active chemical species is sulphuric acid).

There is a very real difference between an "Earth-like" Mars, and a sulphuric acid-dominated planet. Can I say "Hell" - oh, that's reserved for Venus. - How about "wasteland"...

We have to be VERY careful how we draw links between Mars and Earth. Often, they are contra-intuitive. I'm not denying *everything* you have mentioned. but I do draw attention to your basic thesis - the "phylosilicate=clays=temperate water-rich environment for appreciable periods of time". We see many small and not-so-small factors that that don't sit well with this hypothesis...

imho...

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