Journey to Mt Sharp - Part 5A: Pahrump Hills, Sites 42-45, Sol 753-923, Sep 18, 2014-March 12, 2015 |
Journey to Mt Sharp - Part 5A: Pahrump Hills, Sites 42-45, Sol 753-923, Sep 18, 2014-March 12, 2015 |
Feb 13 2015, 12:21 AM
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#436
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Member Group: Members Posts: 334 Joined: 11-December 12 From: The home of Corby Crater (Corby-England) Member No.: 6783 |
Isn't the meniscus effect due to a liquid being in a container?
I would imagine there is either some moisture involved (not likely) or some sort of magnetic/electrostatic mechanism here. Perhaps due to the fineness of the powder. Or being mixed about perhaps. Unless of of course the 'container' refers to my nose, in which case you shall be hearing from my lawyer in due course! |
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Feb 13 2015, 02:20 AM
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#437
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Senior Member Group: Members Posts: 1044 Joined: 17-February 09 Member No.: 4605 |
While we will find out the composition of the material in due course we do know two things for sure. The powder is extremely fine and absolutely desiccated. So we can disregard capillary action leaving electrostatic and van der Waals forces. The material has been shaken about and poured so formation of spherical accumulations is no surprise.
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Guest_Actionman_* |
Feb 13 2015, 11:29 AM
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#438
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Guests |
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Feb 13 2015, 02:45 PM
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#439
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Solar System Cartographer Group: Members Posts: 10166 Joined: 5-April 05 From: Canada Member No.: 227 |
-------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Feb 13 2015, 03:02 PM
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#440
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Senior Member Group: Members Posts: 2833 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
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Feb 13 2015, 03:42 PM
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#441
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Solar System Cartographer Group: Members Posts: 10166 Joined: 5-April 05 From: Canada Member No.: 227 |
-------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Feb 13 2015, 11:46 PM
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#442
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Member Group: Members Posts: 866 Joined: 15-March 05 From: Santa Cruz, CA Member No.: 196 |
Well perhaps I just overlooked seeing this reaction in all the other drill dumps. reminds me how a package of powdered sugar always ends up with assorted spheres of many sizes inside, presumably from agitation causing compression clumping in turn rounded by agitation. the spheres are similarly hardened and don't shatter by the fall on the bedrock. in this detail crosseye you can see a 'socket' where one rolled away and a 'hole' a bit below that where the pile left void somehow, perhaps a sphere sunk deeper? |
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Feb 13 2015, 11:54 PM
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#443
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Senior Member Group: Members Posts: 1044 Joined: 17-February 09 Member No.: 4605 |
Well perhaps I just overlooked seeing this reaction in all the other drill dumps. Good point, but this is the first very low percussion, reduced energy drilling and this would leave larger particles in the mix to serve as nuclei. Also unlike all other drill locations, the initial CheMin analysis indicates significant jarosite. ChemMin sample processing involves vibration of the sample which results in tribocharging and agglomeration (from the latin "to form into a ball"). |
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Feb 14 2015, 01:39 AM
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#444
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Member Group: Members Posts: 384 Joined: 4-January 07 Member No.: 1555 |
... vibration of the sample ... results in tribocharging and agglomeration (from the latin "to form into a ball"). In a similar way, vibration and turbulent mixing of particles that are already naturally sticky (owing, e.g., to condensing moisture and/or appreciable salt content) can lead to the agglomeration of spherical accretionary lapilli in the sandy or dusty deposits of impacts or volcanic explosions. Don Burt |
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Guest_Actionman_* |
Feb 14 2015, 01:21 PM
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#445
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Guests |
reminds me how a package of powdered sugar always ends up with assorted spheres of many sizes inside, presumably from agitation causing compression clumping in turn rounded by agitation. the spheres are similarly hardened and don't shatter by the fall on the bedrock. in this detail crosseye you can see a 'socket' where one rolled away and a 'hole' a bit below that where the pile left void somehow, perhaps a sphere sunk deeper? Inadequate mixing of the added corn starch in the powder sugar may also contribute to particle adhesion after repeated bag openings.. |
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Feb 14 2015, 03:25 PM
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#446
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Senior Member Group: Members Posts: 2833 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
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Feb 18 2015, 10:56 AM
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#447
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Senior Member Group: Members Posts: 2833 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
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Feb 18 2015, 03:13 PM
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#448
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Solar System Cartographer Group: Members Posts: 10166 Joined: 5-April 05 From: Canada Member No.: 227 |
-------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Feb 19 2015, 02:50 AM
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#449
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Senior Member Group: Members Posts: 4247 Joined: 17-January 05 Member No.: 152 |
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Feb 19 2015, 04:18 AM
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#450
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Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
There is a small, non-embedded stone at the bottom of the linked image that shows one side of white, as well. Sure looks like a piece of whatever broke off the main rock.
-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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