[meteorite-list] RSVP re analytical services costs

From: Jeff Grossman <jgrossman_at_meteoritecentral.com>
Date: Thu Apr 22 10:20:59 2004
Message-ID: <5.1.0.14.2.20030706114306.00b1fc08_at_gsvaresm02.er.usgs.gov>

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The NomCom would recognize classifications done by anybody with a proven
track record in meteorite geochemistry and petrology.&nbsp; Several
members of the dealer community have described meteorites from their own
analyses.&nbsp; These dealers understand that the NomCom may ask for a
second opinion on descriptions of meteorites other than simple
equilibrated ordinary chondrites, and that the NomCom will ask them to
get professional verification of their data when they first start
analyzing minerals (to help establish a track record).&nbsp; If a
description does not meet our normal standards for a particular type of
meteorite, we would not accept it.&nbsp; We also never waive the 20g/20%
rule for types specimens to be placed in institutional collections, as
this has nothing whatsoever to do with the requirement that a meteorite
is properly classified. <br><br>
Also, don't forget that there is more to describing a meteorite than
mineral analyses.&nbsp; For all interesting meteorites,somebody also has
to do a sound petrologic description, and in many cases supplemental data
must be obtained to complete a classification (e.g., O isotopes, trace
element analyses).<br><br>
jeff<br>
At 08:35 AM 7/6/2003 -0700, you wrote:<br>
<blockquote type=cite class=cite cite>Hello Randy,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; I can see how such a service may be
well worth the cost IF it <br>
would allow hunters and other dealers to leap frog long institutional
<br>
waits. Though their service is &quot;free&quot;, it can take months. (20%
or <br>
20 grams minimal donation of material seems to be the custom - <br>
but institutional material is crucial to the science and desirable <br>
for the private sector as well). <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; However:<br>
1- would the test indicated identify the material as definitely <br>
&nbsp;&nbsp; meteoritic or not?<br>
2 - would this process be accepted by the nomenclature committee?<br>
3 - would this process leap frog institutional identification as
far<br>
&nbsp;&nbsp; as the nomenclature committee is concerned?<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; If the answer to all 3 is YES, then
I can see your services as HIGHLY<br>
desirable, given the huge logjam currently resulting from the glut
of<br>
NWA material. However, if the answer to any of them is &quot;NO,&quot;
then <br>
the value of such a service would seam to me to be, at best, relatively
<br>
limited. (But then, perhaps I am missing something here.....that
is,<br>
unfortunately, not an uncommon circumstance). <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Please enlighten us. <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; RSVP<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Thanks, Michael Blood<br><br>
<br><br>
on 7/6/03 6:41 AM, GT40dawg_at_aol.com at GT40dawg@aol.com wrote:<br>

<dl><font size=2>
<dd>To all:<br><br>

<dd>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A few weeks ago, I posted a
message&nbsp; on this board that I would be providing analytical services
such as SEM, XRD, and electron microprobe analyses.<br><br>

<dd>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; I can do such analyses as Fe/Ni ratios
of metallic grains/phases and full pyroxene analyses via electron
microprobe.&nbsp; Pyroxenes would be analyzed for all of the major
elements, such as Fe, Mg, Si, Ca, Ti, Al, Na,&nbsp; and 3 others (Na, Mn,
K for example).&nbsp; Actually, I can analyze any mineral phase (in
meteorites or in terrestrial samples), but the abovementioned are the
ones that seem to peak most poeple's interest when it comes to
meteorites.<br><br>

<dd>This will be the standard cost breakdown for electron microprobe
work:<br><br>

<dd>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; any 2 analyses (i.e. Fe/Ni
ratios or pyroxenes) for $100
<dd>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; any 4 analyses for $150
<dd>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; any 6 analyses for
$200<br><br>

<dd>For the purpose of insuring a representative sample, I would
recommend 2-3 analyses of each mineral phase of interest.&nbsp; I do
sample prep on Saturdays (if necessary), and analyses would normally be
done sometime during the following week.&nbsp; Polished thin sections can
also be used in lieu of unprepared samples.&nbsp; I would e-mail
preliminary results to you ASAP, with a full report to follow in the
mail<br><br>

<dd>SEM imaging and XRD identification of individual mineral phases will
be priced out on a case-by -case basis.&nbsp; All data results discussed
above are publishable, no problem.&nbsp; Please feel free to e-mail me
with any questions.<br><br>
<br><br>

<dd>Randy in N.O.<br><br>
<br><br>
<br><br>
<br><br>
</font>
</dl><br><br>
&quot;I stand by all the misstatements that I've made.&quot;<br>
&nbsp; ...George W. Bush to Sam Donaldson, 8/17/93<br>
--<br>
Worth Seeing:<br>
-&nbsp; Earth at night from satellite:<br>
<a href="http://antwrp.gsfc.nasa.gov/apod/image/0011/earthlights_dmsp_big.jpg" eudora="autourl">http://antwrp.gsfc.nasa.gov/apod/image/0011/earthlights_dmsp_big.jpg</a><br>
- Interactive Lady Liberty:<br>
<a href="http://doody36.home.attbi.com/liberty.htm" eudora="autourl">http://doody36.home.attbi.com/liberty.htm</a><br>
- Earth - variety of choices:<br>
<a href="http://www.fourmilab.ch/earthview/vplanet.html" eudora="autourl">http://www.fourmilab.ch/earthview/vplanet.html</a>
<br>
--<br>
Panoramic view of Meteor Crater:<br>
<a href="http://www.virtualguidebooks.com/Arizona/GrandCanyonRoute66/MeteorCrater/MeteorCraterRimL.html" eudora="autourl">http://www.virtualguidebooks.com/Arizona/GrandCanyonRoute66/MeteorCrater/MeteorCraterRimL.html</a><br>
--<br>
Cool Calendar &amp; Clock:<br>
&nbsp;<a href="http://www.yugop.com/ver3/stuff/03/fla.html" eudora="autourl">http://www.yugop.com/ver3/stuff/03/fla.html</a><br>
--<br>
Michael Blood Meteorites &amp; Didgeridoos for sale at:<br>
<a href="http://www.michaelbloodmeteorites.com/" eudora="autourl">http://www.michaelbloodmeteorites.com/</a><br><br>
</blockquote>
<x-sigsep><p></x-sigsep>
Dr. Jeffrey N. Grossman<br>
Chair, Meteorite Nomenclature Committee (Meteoritical Society)<br>
US Geological Survey&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br>
954 National Center<br>
Reston, VA 20192, USA<br>
Phone: (703) 648-6184&nbsp;&nbsp; fax:&nbsp;&nbsp; (703) 648-6383<br><br>
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Received on Sun 06 Jul 2003 12:03:29 PM PDT


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