Hello Jeff and Graham,
Exactly.....but a step further. I would suggest going further than just
saying what the lithology is.
That was done in this case in the write up.
Okay, so we have as an example Katol #4(?). If you say it has a metal
rich lithology....what is it?
Everything past that is guess work and opinion if not studied.
It's like calling all the lunars by one name....after all it's only one
moon....as a gross example!
Jim
On 1/2/2014 7:49 AM, Graham Ensor wrote:
Great discussion...Jeff, you preempted exactly what I was thinking...I
would think such data added to classifications showing details of
unusual lithologies and individuals within the general classification
would be greatly appreciated by all. The variations within falls and
finds always fascinate me.
Graham
On Thu, Jan 2, 2014 at 2:39 PM, Jeff Grossman <[email protected]> wrote:
Two things:
Many meteorites are heterogeneous. When we say Katol is L6 or NWA 869 is
L3-6 or Almahata Sitta is an anomalous urelite, these are collective terms.
"Katol" refers to everything that fell that day in India. It has been
classified as L6. However, it is possible (and for Almahata Sitta,
probable) that a given specimen does not representatively sample the
incoming meteoroid. There is nothing wrong with saying that Almahata Sitta
#25 is dominated by an H5 lithology or that Katol #4(?) is a metal rich
lithology. Good practice would be to assign some kind of specimen number to
each object and publish a catalog, so the world will always know what you
are talking about. I would gladly publish such specimen tables in the
MetBull database, especially if done systematically.
As for the name question, NomCom would only give a separate name if there
was significant doubt that a specimen was part of the Katol fall. This has
happened before, as with Galim (b) and Zag (b), but it didn't happen with
Almahata Sitta and I don't think there is much doubt in this case either.
Jeff
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Jim Wooddell
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http://pages.suddenlink.net/chondrule/
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