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Jikharra 001   contributed by Scott McGregor, IMCA 8154   MetBul Link

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View all entries for   Meteorite (2)   Scott McGregor (41)

Scott McGregor.   Copyright (c) Scott McGregor.
32.5 gram full slice. 100 x 70 mm.   Eucrite-melt breccia

TKW 2.5 tons. Fall not observed. Purchased 2022, Ajdabiya, Libya.


Scott writes:
Following on to the excellent end-cut of Jikharra 001 in the 9/12/23 MPOD, here’s a smaller slice with some interesting vesicles.

What would cause such a sharp gradient in bubble size. Maybe like Champagne where the bubbles grow as they rise!
Click to view larger photos




Found at the arrow (green or red) on the map below


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Wabar Impact Glass
Matthias Baermann

This Month

Edwin Thompson
 9/20/2023 4:42:38 PM
More than likely passed close to the Sun. similar effect with roughly half of the mass of Willamette which was recrystallized from a medium octahedrite into a pattern similar to galvanized spangle or Carver which is also a recrystallized iron. Or possibly passed very close to major cataclysmic impact causing high heat. Many vesicular meteorites such as Chico, New Mexico have been studied, sadly they have all been old, weathered examples like the angrite D'Orbigny which is loaded with graduated vesicles up to two centimeters in diameter but, a vesicular stone meteorite whether chondrite or achondrite is similar to a kitchen sponge, allowing water to seep in and out and gasses to do the same. When a meteorite rests out in the desert sun for many years, cooking by day and cooling by night, much of the valuable scientific information is weathered away. A vesicular fresh fall would be a horse of another color. This is one of the most valuable aspects of rapid recovery.
John lutzon
 9/20/2023 2:55:15 PM
The best example of size graduations of vesicles in the same (but separate) lithography ; therein lies interesting discussions. Agree with all of the below including MB's penning of my original comments. ;-)
Scott McGregor
 9/20/2023 2:07:24 PM
Has anybody analyzed the gasses that might be trapped in meteorite vesicles?
 9/20/2023 1:05:51 PM
Never have seen in a meteorite such Suisse-Cheese-like versicles, and to top it: in a slice resembling the South American continent. Thrilling.
Bernd Pauli
 9/20/2023 12:52:39 PM
Wow! Look at these breathtaking vesicles!
Kally Wombacher
 9/20/2023 5:17:46 AM
Bubble, bubble, toil and trouble. Super piece!
Benjamin P. Sun
 9/20/2023 4:57:49 AM
Super interesting meteorite!

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