Hi, see a pic of the mainmass at
http://epswww.unm.edu/meteoritemuseum/hand-samples.htm Cheers, Christian I.M.C.A. #2673 at www.imca.cc website: www.austromet.com Ing. Christian Anger Korngasse 6 2405 Bad Deutsch-Altenburg AUSTRIA email: [EMAIL PROTECTED] email: [EMAIL PROTECTED] > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:meteorite-list- > [EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] > Sent: Sunday, January 06, 2008 6:31 PM > To: [email protected] > Subject: [meteorite-list] Re-2: Rocks from Space Picture of the Day -January > 06, 2008 > > > http://www.rocksfromspace.org/January_6_2008.html > > Jerry writes: > > "What a unique specimen. I understand that there is a lack of > metal and that the chemical composition is primarily MgSiO." > > Yep, it is almost pure MgSiO3 and, because of its lack of iron, the fusion > crust > is a light brown (near-white) or almost clear glassy (translucent) color. > > Jerry asks: "Does this make it crustal material?" > > According to the late Robert Hutchison: "The fragmental nature of most > aubrites > and the presence of trapped solar wind in some sugggests that they are > near-surface > breccias." > > Harry McSween: "Some aubrite breccias contain fragments of slowly cooled > plutonic > rocks as well as melted clasts that formed by impacts and cooled rapidly near > the > surface." > > Moni inquires: "Is it slightly magnetic?" > > Even though most aubrites [exceptions: Mount Egerton with 21% FeNi metal(!) > and Shallowater > with 9% metal] are really metal-poor, they do contain small amounts of > nickel-iron so my guess > is that it depends on the sensitivity of the magnet used but the attraction > should be extremely > weak - almost zero. > > Moni: "a piece of stone looking like this I am not sure I would pick it up." > > That's exactly what I thought when I got my specimen from Walter Zeitschel. > I said to myself: "What's that? He must be kidding...that isn't a meteorite!" > > Moni: "And is the crust grey?" > > NORTON O.R. (1998) Rocks From Space II, p. 204: "A fresh specimen has a gray- > white or light tan crust, a distinguishing characteristic of enstatite > achondrites." > > > Moni also asks: "are there more images available?" > > Mike Farmer has a few specimens + pictures => http://www.meteoritehunter.com/ > > Best wishes, > > Bernd > > > > To: [EMAIL PROTECTED] > [EMAIL PROTECTED] > [email protected] > > ______________________________________________ > http://www.meteoritecentral.com > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
