[meteorite-list] Zag classification, / - differences, pop quiz

From: Mikestockj_at_aol.com <Mikestockj_at_meteoritecentral.com>
Date: Fri Nov 12 18:21:23 2004
Message-ID: <fd.684b886.2ec69f6e_at_aol.com>

In a message dated 11/12/2004 3:54:53 PM Mountain Standard Time,
jgrossman_at_usgs.gov writes:
The slash means the person could not tell, or, sometimes, that the meteorite
is
transitional.

Hi Jeff
Thanks for clearing that up. Obviously shows I have never classified a
meteorite.

I was getting my definition from the Introduction to each Meteoritical
Bulletin. It says "For chondritic groups, petrologic types, shock stages and
weathering grades, slashes (e.g. H5/6) indicate transitional assignments." Maybe the
official definition could be slightly changed to reflect the fudge factor. :)

You mentioned that some times a person cannot tell if it is one
classification or another so end up using the slash. I can understand how this is possible
over a range of two grades. But do you believe that this is
possible/acceptable over 3 or more grades such as H4/6?


Mike


Mike Jensen IMCA 4264
Bill Jensen IMCA 2359
Jensen Meteorites
16730 E Ada PL
Aurora, CO 80017-3137
303-337-4361
Received on Fri 12 Nov 2004 06:21:18 PM PST