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New Bright Stuff, Paso Robles 2 |
 Jan 13 2006, 06:16 AM
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#1
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 Member  Group: Members Posts: 578 Joined: 5-November 04 From: Denmark Member No.: 107  |
Looks like the new bright stuff churned up by Spirit has gotten the attention from the PI on Mount Itacha
 Spirit Front Hazcam Latest Steve update QUOTE So what is this new stuff (which we have named Arad)? The same kind of salt? Something different? Similar concentration or even saltier? It was too tempting a target to pass up, and we're going to spend the weekend doing IDD work on it before moving on.
-------------------- "I want to make as many people as possible feel like they are part of this adventure. We are going to give everybody a sense of what exploring the surface of another world is really like"
- Steven Squyres |
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Jan 15 2006, 10:32 AM
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#2
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Senior Member Group: Members Posts: 3009 Joined: 30-October 04 Member No.: 105 |
It _is_ hard to figure out exactly what is going on here. But I think that your drawing board is still good, think of sulfates in various states of oxidation-reduction with different metals balancing out the SO4's. I've seen/heard of that happening in minespoil piles with pyrite oxidizing like mad til it sucks up all the O2, then it switches gears. Sulfates are important since they serve as an energy source for a class of microbes, the thiobacillus group. Ya gotta have food for bugs in the desert...
Still digging in my archives for colorful images. I _do_ need some sort of indexing system. --Bill -------------------- |
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Jan 15 2006, 01:53 PM
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#3
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 Member Group: Members Posts: 136 Joined: 13-October 05 From: Malibu, CA Member No.: 527 |
QUOTE (Bill Harris @ Jan 15 2006, 03:32 AM) It _is_ hard to figure out exactly what is going on here. Sure is... I'm not much of a chemist, or geologist, just an avid rock-hound that's been tinkering at the hobby for about 50 years... I've seen stuff like this right here on good old terra firma quite often, and your comment on minespoil nails exactly where I've seen stuff like this. Typical content is just SiO2, and CaCO3, but the ‘pretty stuff’ is in metal oxides, primarily iron, aluminum, magnesium and lead - in that order of prominence. The zeolites and feldspars being what I’m after (crystalline forms of) - and this mars dig looks akin to Analcime - often a multicolored zeolite, but usually white. It's usually aluminum based, but with lead it goes multi-color. Wish they would publish more on what elements the spectrographic work shows... 
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Jan 15 2006, 05:20 PM
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#4
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 Member Group: Members Posts: 723 Joined: 13-June 04 Member No.: 82 |
QUOTE (sattrackpro @ Jan 15 2006, 01:53 PM) Wish they would publish more on what elements the spectrographic work shows...  slinted gave a link to a paper that goes into great detail on the results of 93 different APXS integrations, on the first page of this thread. Examples of several results from that paper (numbers in parenthesis are two-sigma errors): sol 14 Gusev soil (integration time 13.5 hours) Na2O: 2.8 % (0.3 %) MgO: 8.34 % (0.12 %) Al2O3: 9.89 % (0.14 %) SiO2: 46.3 % (0.5 %) P2O5: 0.87 % (0.08 %) SO3: 6.61 % (0.08 %) Cl: 0.78 % (0.02 %) K2O: 0.48 % (0.06 %) CaO: 6.36 % (0.05 %) TiO2: 0.86 % (0.07 %) Cr2O3: 0.31 % (0.03 %) MnO: 0.33 % (0.01 %) FeO: 16.0 % (0.11 %) Ni: 556 ppm (51 ppm) Zn: 293 ppm (18 ppm) Br: 31 ppm (17 ppm) sol 172 Pot of Gold RAT (integration time 5.0 hours) Na2O: 3.0 % (0.2 %) MgO: 9.91 % (0.13 %) Al2O3: 10.32 % (0.13 %) SiO2: 42.9 % (1.4 %) P2O5: 1.08 % (0.08 %) SO3: 7.96 % (0.10 %) Cl: 0.57 % (0.01 %) K2O: 0.20 % (0.06 %) CaO: 5.86 % (0.05 %) TiO2: 0.77 % (0.07 %) Cr2O3: 0.27 % (0.03 %) MnO: 0.24 % (0.01 %) FeO: 16.7 % (0.12 %) Ni: 894 ppm (52 ppm) Zn: 112 ppm (13 ppm) Br: 77 ppm (17 ppm) sol 401 PasoRobles disturbed soil (integration time 2.7 hours): Na2O: 1.6 % (0.2 %) MgO: 5.53 % (0.09 %) Al2O3: 4.13 % (0.07 %) SiO2: 21.8 % (0.3 %) P2O5: 5.61 % (0.14 %) SO3: 31.7 % (0.30 %) Cl: 0.55 % (0.02 %) K2O: 0.19 % (0.06 %) CaO: 6.84 % (0.06 %) TiO2: 0.62 % (0.07 %) Cr2O3: 0.04 % (0.03 %) MnO: 0.25 % (0.01 %) FeO: 21.0 % (0.12 %) Ni: 109 ppm (49 ppm) Zn: 98 ppm (18 ppm) Br: 494 ppm (26 ppm) Bill |
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Jan 16 2006, 01:07 PM
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#5
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Member Group: Members Posts: 136 Joined: 13-October 05 From: Malibu, CA Member No.: 527 |
QUOTE (Mongo @ Jan 15 2006, 10:20 AM) slinted gave a link to a paper that goes into great detail on the results of 93 different APXS integrations, on the first page of this thread. - - - Bill Thanks very much, Bill - that is a great piece - very informative! There are also a number of other pdf's in that pip directory (see just by trimming the trailing file) that are most interesting.
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dot.dk New Bright Stuff Jan 13 2006, 06:16 AM
CosmicRocker "Mars - "Dramatically different from any... Jan 13 2006, 07:49 AM Bill Harris "...and not stop for anything unless somethin... Jan 13 2006, 09:43 AM slinted We'll have to make this new one Paso Robles 3,... Jan 13 2006, 10:35 AM
Oersted Maybe Home Plate will turn out to be a deposit of ... Jan 13 2006, 01:22 PM ljk4-1 QUOTE (Oersted @ Jan 13 2006, 08:22 AM)Maybe ... Jan 13 2006, 02:25 PM Bill Harris Thanks, Slinted, for that reference. I recall it ... Jan 13 2006, 01:48 PM Bob Shaw Bill:
Any ancient brines at Gusev (or anywhere el... Jan 13 2006, 02:03 PM atomoid Im suspecting there to be an extensive layer at so... Jan 13 2006, 10:52 PM nprev Hmm. Does the fact that these salt deposits exist ... Jan 14 2006, 01:42 AM Shaka QUOTE (nprev @ Jan 13 2006, 03:42 PM)Hmm. Doe... Jan 14 2006, 02:16 AM CosmicRocker Do we really know that there are "pockets... Jan 14 2006, 04:34 AM CosmicRocker Every once in a while the raw images come down wit... Jan 14 2006, 05:05 AM alan I used a different combination of filters to bring... Jan 14 2006, 05:21 AM CosmicRocker You sure did! That's awesome, alan. Ther... Jan 14 2006, 06:47 AM nprev Could be that the different tints are due to vario... Jan 14 2006, 06:50 AM CosmicRocker Oh, no doubt there is some mixing going on with so... Jan 14 2006, 07:29 AM Nix some stereo on the trenching;
color stereo @ 50%... Jan 14 2006, 08:26 AM Bill Harris This is quite a site. I think that some of the ra... Jan 14 2006, 09:12 AM nprev QUOTE (Bill Harris @ Jan 14 2006, 02:12 AM)Th... Jan 14 2006, 09:22 AM nprev Spectacular, Nix!!!!
The s... Jan 14 2006, 09:20 AM edstrick I grabbed Alan's color version, did a judiciou... Jan 14 2006, 09:22 AM helvick Am I right in thinking that we seem to have a pret... Jan 14 2006, 11:17 AM RGClark QUOTE (edstrick @ Jan 14 2006, 09:22 AM)I gra... Jan 14 2006, 03:17 PM Bob Shaw QUOTE (RGClark @ Jan 14 2006, 04:17 PM)Great ... Jan 14 2006, 03:28 PM edstrick I think so.. it's spotty in distribution, not ... Jan 14 2006, 11:37 AM sattrackpro I’m really enjoying watching this odyssey here... ... Jan 14 2006, 01:29 PM Oersted Possibly out on a limb here, but maybe Home Plate ... Jan 14 2006, 02:47 PM mhoward Just because it's pretty: Jan 14 2006, 05:00 PM alan false color image of the other side
The reddish c... Jan 15 2006, 05:59 AM slinted Another color shot of Arad in full filter came dow... Jan 15 2006, 06:03 AM JonClarke QUOTE (slinted @ Jan 15 2006, 06:03 AM)This s... Jan 16 2006, 12:27 AM CosmicRocker It's just gorgeous, isn't it? I don't... Jan 15 2006, 08:09 AM dilo Hey, Spirit is working on this stuff also after ... Jan 15 2006, 10:02 PM Bill Harris That's right: color. Mineralogy 101. Duh.
--... Jan 16 2006, 03:16 AM CosmicRocker QUOTE (dilo @ Jan 15 2006, 04:02 PM)Hey, Spir... Jan 16 2006, 05:54 AM Nix true color is up;
http://marswatch.astro.cornell.... Jan 16 2006, 07:47 AM jaredGalen Wow, Spirit does look really dusty in this one;
ht... Jan 16 2006, 12:34 PM Toma B QUOTE (jaredGalen @ Jan 16 2006, 03:34 PM)Wow... Jan 16 2006, 07:37 PM dvandorn QUOTE (jaredGalen @ Jan 16 2006, 06:34 AM)Wow... Jan 17 2006, 03:45 AM Bob Shaw QUOTE (dvandorn @ Jan 17 2006, 04:45 AM)Oh...... Jan 17 2006, 10:27 PM dot.dk QUOTE (jaredGalen @ Jan 16 2006, 12:34 PM)Wow... Jan 16 2006, 12:49 PM Jeff7 QUOTE (dot.dk @ Jan 16 2006, 07:49 AM)I have ... Jan 16 2006, 07:12 PM slinted This JPL photojournal writeup confirms findings of... Jan 20 2006, 10:48 AM CosmicRocker Yeah, Dan. I also noticed that they posted the sa... Jan 21 2006, 07:55 AM Bill Harris No, next to the last person. It's buried in M... Jan 21 2006, 11:34 AM sattrackpro QUOTE (Bill Harris @ Jan 21 2006, 04:34 AM)..... Jan 21 2006, 12:21 PM stevo This comment also
"Well, with Opportunity, w... Jan 21 2006, 02:28 PM Bill Harris I have the text transcripts saved. What I meant w... Jan 21 2006, 04:41 PM slinted The latest update from Steve Squyres revealed some... Jan 30 2006, 12:54 PM Bill Harris QUOTE Also still lingering is the issue of concent... Jan 31 2006, 01:34 AM CosmicRocker As Bill said, such things can easily be localized ... Jan 31 2006, 05:56 AM |
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