[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> <html> The NomCom would recognize classifications done by anybody with a proven track record in meteorite geochemistry and petrology. Several members of the dealer community have described meteorites from their own analyses. 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). If a description does not meet our normal standards for a particular type of meteorite, we would not accept it. 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. 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> 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 "free", 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> However:<br> 1- would the test indicated identify the material as definitely <br> 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> as the nomenclature committee is concerned?<br> 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 "NO," 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> Please enlighten us. <br> RSVP<br> 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> A few weeks ago, I posted a message on this board that I would be providing analytical services such as SEM, XRD, and electron microprobe analyses.<br><br> <dd> I can do such analyses as Fe/Ni ratios of metallic grains/phases and full pyroxene analyses via electron microprobe. Pyroxenes would be analyzed for all of the major elements, such as Fe, Mg, Si, Ca, Ti, Al, Na, and 3 others (Na, Mn, K for example). 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> any 2 analyses (i.e. Fe/Ni ratios or pyroxenes) for $100 <dd> any 4 analyses for $150 <dd> 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. I do sample prep on Saturdays (if necessary), and analyses would normally be done sometime during the following week. Polished thin sections can also be used in lieu of unprepared samples. 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. All data results discussed above are publishable, no problem. 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> "I stand by all the misstatements that I've made."<br> ...George W. Bush to Sam Donaldson, 8/17/93<br> --<br> Worth Seeing:<br> - 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 & Clock:<br> <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 & 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 <br> 954 National Center<br> Reston, VA 20192, USA<br> Phone: (703) 648-6184 fax: (703) 648-6383<br><br> </html> Received on Sun 06 Jul 2003 12:03:29 PM PDT |
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