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Hello=2C Greg and list.=20 >From what I understand - chondrules can't form on bodies that have or have = had been (such as rocky planets and asteroids like Vesta)=2C geologically a= ctive - because the material has been so heavily processed.. The iron and n= ickle which are heavier than the rocky/silicate=2C are driven to the core b= y gravity when it was molten.=20 The last paragraph of your message pretty much answers your question. =3B)= =20 Regards=20 ----------- Melanie IMCA: 2975 eBay: metmel2775 Known on SkyRock Cafe as SpaceCollector09 =20 Unclassified meteorites are like a box of chocolates... you never know what= you're gonna get!=20 ---------------------------------------- > From: stanleygr...@hotmail.com > To: epgrond...@yahoo.com=3b meteorite-list@meteoritecentral.com > Date: Fri=2C 2 Oct 2009 13:51:29 -0700 > Subject: Re: [meteorite-list] Chondrule formation > > > Hello All: > > I had a thought: > > It seems to me that chondrules are prevalent in meteorites blasted from a= steroidal bodies and not from planetary bodies. For example=2C do chondrule= s exist (or have been found) on any meteorites from the moon=2C mars or may= be from Mercury (Angrites?)? Now I understand that these are called achondr= ites=2C and thus they do not have chondrules=2C but it seems that chondrite= s are only from asteroidal bodies (or perhaps comets). With that said=2C m= aybe there is a relationship between formation of rock without gravity (or = a very small amount of gravity)=3B chondrules form initially during the for= mation of the solar system=2C and then later over millions of years are alt= ered on planetary bodies under a gravitational force. > > Just my two cents worth. > > Greg S. > > ---------------------------------------- >> Date: Fri=2C 2 Oct 2009 11:58:02 -0700 >> From: epgrond...@yahoo.com >> To: meteorite-list@meteoritecentral.com >> Subject: Re: [meteorite-list] Chondrule formation >> >> Hi all - >> >> "We don't know crap..." Hey!=2C who stole my line? >> >> But that's okay=2C I can come up with another one: >> We don't know crap about the impact hazard=2C >> and NASA senior managers know less than that. >> >> E.P. Grondine >> Man and Impact in the Americas >> >> >> >> >> ______________________________________________ >> http://www.meteoritecentral.com >> Meteorite-list mailing list >> Meteorite-list@meteoritecentral.com >> http://six.pairlist.net/mailman/listinfo/meteorite-list > > _________________________________________________________________ > Hotmail: Trusted email with Microsoft=92s powerful SPAM protection. > http://clk.atdmt.com/GBL/go/177141664/direct/01/ > ______________________________________________ > http://www.meteoritecentral.com > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list =0A= _________________________________________________________________=0A= Click less=2C chat more: Messenger on MSN.ca=0A= http://go.microsoft.com/?linkid=3D9677404= ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
