[meteorite-list] Norwegian meteorite classification guessing game
From: Martin Horejsi <accretiondesk_at_meteoritecentral.com>
Date: Tue Jul 18 14:34:42 2006 Message-ID: <9c2f96d20607181134k3c7ed2a9mff37ffc145556628_at_mail.gmail.com> Hi Adam, I agree that third-hand Internet-based visual means are an extremely poor, unreliable, ineffective, and highly inappropriate method of classifying meteorites. But I also agree that it is fun. Your scientific wild-assed guess and mine likely differ based upon our personal experiences with meteorites. So... are you willing to bet a margarita in Tucson on your guess? I am. Cheers, Martin On 7/18/06, Adam Hupe <raremeteorites_at_comcast.net> wrote: > Hi Martin and All, > > I don not think images are a good way to ascertain classifications but in > this case I took a S.W.A.G. at it in the interest of fun. I think the crust > is wrong for a CO3 because virtually every sample of a CO3 I have seen has > very fine contraction cracks, some do not even penetrate as deep as the > matrix. These cracks show up in detailed images. These cracks are absent in > the enhanced image provided by a List member taken from an article on the > new fall. The color of CO3 type crusts is usually semi-gloss black, never > flat black like the one in the image. In my opinion, the crusts are always > uniformly thin on a CO3 and never velvet-like and patchy. > > I think many feel it is a CO3 based on the numerous very small chondrules > and not the crust. I agree the chondrules are too small for an LL, CV, CR, > CK or even an L. They are too numerous for a CM2 which are sparsely > populated. This leaves only CO, H or Anom types as candidates. I picked an H > type because I have seen examples with exceedingly small chondrules, velvet > like flat black crusts and friable matrixes. > > Take Care, > > Adam > > > ----- Original Message ----- > > From: "Martin Horejsi" <accretiondesk_at_gmail.com> > To: "Adam Hupe" <raremeteorites_at_comcast.net> > Cc: "Michael Farmer" <meteoritehunter_at_comcast.net>; > <meteorite-list_at_meteoritecentral.com> > Sent: Tuesday, July 18, 2006 5:46 AM > Subject: Re: Re: [meteorite-list] Norwegian meteorite classification > guessing game > > > > On 7/17/06, Adam Hupe <raremeteorites_at_comcast.net> wrote: > > > The crust is wrong for a CO3. The famous "Out House Hammer Stone", I > can > > > smell history in the making! > > > > Hi Adam, > > > > In what way do you think the crust is wrong for a CO3? > > > > Just curious. > > > > Martin > > > ______________________________________________ > Meteorite-list mailing list > Meteorite-list_at_meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > Received on Tue 18 Jul 2006 02:34:39 PM PDT |
StumbleUpon del.icio.us Yahoo MyWeb |