Winter campaign at Cook Haven, Sol 3512 - 3599 (December 13, 2013 - March 10, 2014) |
Winter campaign at Cook Haven, Sol 3512 - 3599 (December 13, 2013 - March 10, 2014) |
Dec 13 2013, 04:31 AM
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#1
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Senior Member Group: Moderator Posts: 3431 Joined: 11-August 04 From: USA Member No.: 98 |
She's there! Opportunity drove down to the "Cook Haven" bright outcrops on Sol 3512.
Even better, news via Twitter that currents on the front right wheel are back to normal. Phew. |
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Jan 17 2014, 05:35 AM
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Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
Would manganese deposited hydrothermally be suspended in water in the form of a manganese salt? Or are there more complex chemical interactions which would keep manganese in suspension and then initiate its precipitation out of solution? And would this imply warm, or even hot water (i.e., would manganese come out of solution as the water cooled)?
-the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Jan 17 2014, 11:06 PM
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#3
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Senior Member Group: Members Posts: 1057 Joined: 17-February 09 Member No.: 4605 |
....... (i.e., would manganese come out of solution as the water cooled)? More likely oxidation Doug so hot hydrothermal isn't necessary to the process. Interestingly enough Mn deposition has been connected to the authigenic formation of Fe-rich smectites such as nontronite. Fe-Mn oxyhydroxides in hydrothermal fluids can undergo early diagenesis with smectites being the Fe sink and with Mn precipitating, principally as nodules. So the high manganese reading dovetails with the smectites identified from orbit. |
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