[meteorite-list] Classification (general)

From: Devin Schrader <makinsomenoise_at_meteoritecentral.com>
Date: Thu Apr 22 10:31:14 2004
Message-ID: <002901c421c3$55b151c0$6401a8c0_at_hewlett9por0s0>

Hi Mike,
     I do a bit, only as much as breaks in school work will allow me (which
isn't too much lately). One could easily write a book (or books) on each
group. I refere you to a great book that covers most meteorite types in rich
detail:

 Reviews in Minerology, Volume 36: Planetary Materials, J.J. Papike
(editor), 1998. ISSN 0275-0279
            Publisher: Minerological Society of America

I don't want to ramble, so i'll make the answer short. Why a thin section of
the meteorite? So that the sample is transparent (but not too thin) so that
one can look at it under a optical microscope with transmitted light and
find it's Petrologic Type (3-6) according to Van Schums and Wood (1967)
criteria. Then the sample is put in an electron microprobe to find it's
Group, by finding it's bulk composition. The electron microprobe does not
destroy the sample, it only makes tiny pits about the size of the beam
(which is very small). A plot of Olivine (Fa#) vs. wt % Co in Kamacite are
used to put it in a group (H, L, LL).

Hope this answered some of your questions,
  Devin Schrader



----- Original Message -----
From: "Mike / flattoprocks" <mikewm_at_ctaz.com>
To: "Devin Schrader" <makinsomenoise_at_cox.net>;
<meteorite-list_at_meteoritecentral.com>
Sent: Tuesday, April 13, 2004 6:02 PM
Subject: Re: [meteorite-list] Ad - Several Excellent Auctions Ending


> Hello Devin, I understand that you work in the classifaction of
meteorites.
> I was wondering if you could go into a little detail as to what that
means.
> I understand we could write a book about all the different types and so
on.
> But the basic process and why a thin section? How do you know the total
> amount of metal in a sample without destroying the sample?
> I would be very interested in your comments.
> Mike Miller // E-Bay flattoprocks
> ----- Original Message -----
> From: "Devin Schrader" <makinsomenoise_at_cox.net>
> To: <meteorite-list_at_meteoritecentral.com>
> Sent: Tuesday, April 13, 2004 4:49 PM
> Subject: Re: [meteorite-list] Ad - Several Excellent Auctions Ending
>
>
> > Just a reminder, I have no auctions ending tonight.
> > Thanks,
> > Devin
> >
> >
> > ----- Original Message -----
> > From: "Adam Hupe" <adamhupe_at_comcast.net>
> > To: <meteorite-list_at_meteoritecentral.com>
> > Sent: Tuesday, April 13, 2004 3:47 PM
> > Subject: [meteorite-list] Ad - Several Excellent Auctions Ending
> >
> >
> > > Dear List Members,
> > >
> > > Just a quick note to let you know we have well over a hundred auctions
> > > ending tonight. These auctions are drawn from the largest inventory
of
> > > classified NWA meteorites in the world. A great deal of these
offerings
> > are
> > > rare types and most still can be had at a serious bargain. To see
these
> > > auctions check out the ebay link below and click on "Go see all
current
> > > items for sale by this member".
> > >
> > > http://members.ebay.com/aboutme/meteoritelab/
> > >
> > > Thank you for looking and if you are bidding, good luck.
> > >
> > > Adam and Greg Hupe
> > > The Hupe Collection
> > > Team LunarRock
> > > IMCA 2185
> > >
> > >
> > >
> > >
> > > ______________________________________________
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>
>
Received on Tue 13 Apr 2004 09:53:51 PM PDT