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An MPOD Classic from from 16 May 2016


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2021 Fall Date Project

The MPOD Caretakers want to present meteorite falls on their fall dates. For example, Sikhote Aline on 12 February.

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  The MPOD staff is on vacation until May 17, but please keep sending contributions so they will have something to do when vacation is over! Meanwhile, enjoy some Classic MPOD pictures.

 

 

 
NWA 7835   contributed by John Kashuba   MetBul Link

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View all entries for   Meteorite (4)   John Kashuba (9)


Photo by John Kashuba.   Copyright (c) John Kashuba.

What is a thin section?       What do all the colors mean?    
Thin section in cross polarized light.   Achondrite-ung

TKW 56 grams. Fall not observed. Purchased November 2003.

John writes:
Some mineral grains in NWA 7835 contain sheets of multitudes of small inclusions, perhaps empty voids. Some of these sheets are wavy like hanging curtains. When such a grain is thin sectioned the resulting sample contains a ribbon of each curtain that was sliced through. Wavy curtains give rise to wavy ribbons. Here, wavy ribbons almost look like helixes. This view is about 0.3mm wide and is in cross-polarized light.

For more information please see my article in Meteorite Times.


  Click to view larger photos     #1
 


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Michael Hofmann
 5/19/2021 9:49:38 AM
Thats really a cracy one... wow.
Anne Black
 5/16/2021 3:26:09 PM
Yes, Graham, still one of the most amazing TS I have ever seen.
Graham Ensor
 5/16/2021 4:00:54 AM
Wonderful image John.
 

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