Oct 29 2008, 11:36 AM
Opal on mars
, there may be some expensive necklaces come from this discovery...
Oct 29 2008, 11:51 AM
Thread title wrong ( you said HiRISE, not CRISM - I've edited it for you).
Wrong forum ( Mars Express for some reason, not MRO - I've moved it for you)
Oct 29 2008, 12:07 PM
My bad Doug, it was very rushed. Thanks for fixing it for me!
Oct 29 2008, 07:53 PM
Opal is after all just a variety of hydrated silica and most of it is definitely not gem quality. It is even secreted by microorganisms and grass (not that I suggest that this is the origin of Martian opal).
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