[meteorite-list] I need help!! L, H what?

From: Jeff Grossman <jgrossman_at_meteoritecentral.com>
Date: Thu Apr 22 10:31:10 2004
Message-ID: <5.1.0.14.2.20040403084927.03549720_at_gsvaresm05.er.usgs.gov>

Fresh H chondrites have 9-13 volume% metal plus sulfide, L chondrites have
6-7 vol% metal plus sulfide. But notice that a perfectly respectable H
chondrite with 9% only has slightly more metal+sulfide than a perfectly
respectable L with 7%. It's not always easy to distinguish on this
basis. The quality of the surface can also affect what you see.

With that said, here is the reason I am writing: this meteorite has not
been approved by the Nomenclature Committee, so it may not have been
formally classified yet. A lot of provisional classifications get changed
when somebody does an analysis.

jeff

At 05:14 PM 4/2/2004 -0700, you wrote:
>Hello List, I am confused! Please help me out on this! An L is low and an
>H is high, right? If a meteorite is chocked full of visible metal can it be
>a L, or is it an H??
> The reason I am asking, I recieved my NWA 869 and it has tons of metal and
>I know NWA 869 is an L, now I am confused!!!! Does 869 have a ton of metal?
>Or is this not 869? Please help me! : )
>Thanks, Tom
>peregrineflier <><
>Proudest member of the YMCA # OU812
>
>
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Dr. Jeffrey N. Grossman
Chair, Meteorite Nomenclature Committee (Meteoritical Society)
US Geological Survey
954 National Center
Reston, VA 20192, USA
Phone: (703) 648-6184 fax: (703) 648-6383
Received on Sat 03 Apr 2004 09:17:04 AM PST