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Any special nomenclature for this ?

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#1 ZielkeNightsky

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Posted 23 June 2013 - 05:44 PM

Hi there

Got a nice slap of a NWA H4.

Wonder if feature like this larger "chondrule" has any special nomenclature?

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#2 bob71741

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Posted 25 June 2013 - 11:05 AM

if you look in Norton's "Field Guide to Meteors and Meteorites" in chapter four,A Chondrule Gallery, you can see some examples and some of the nomenclature used, but mostly as descriptors; fragmented, radial, fine grained, dark matrix, polyphyritic, granular, etc..
Your specimen has some radialness to it from some of the different grains, but only with some imagination.

I'm really surprised that with over 200 views that someone could not say "yes", "no", or whatever. I'm only a novice at this so take my response with some chondrule grains.

#3 ZielkeNightsky

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Posted 25 June 2013 - 03:42 PM

Hi Bob, thanks for the info. I've just ordered the book.

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I've being digging in the literature and I came up with this:

Radial pyroxene chondrule, a compound chondrule, which was formed by a collision with a second, still plastic chondrule.

Found is this book:
Chondrule formation and accretion processes in the early solar nebula - Clues from noble gases in different constituents of unequilibrated chondrites


http://e-collection..../view/eth:26488

Page 24, Examples from Krymka, Photo B, left

I have no idea if it's pyroxene :question:

Another photo with much better white balance.

Posted Image

(I really need to rebuild my USB microscope with daylight LEDs)

#4 ZielkeNightsky

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Posted 28 July 2013 - 02:05 PM

Hi Bob

Norton's "Field Guide to Meteors and Meteorites", what a great book. Just finished reading it.






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