AW: Re: [meteorite-list] Norwegian meteorite classificationguessinggame
From: Martin Altmann <altmann_at_meteoritecentral.com>
Date: Tue Jul 18 15:20:57 2006 Message-ID: <011601c6aa9f$47006cd0$4f41fea9_at_name86d88d87e2> http://fernlea.tripod.com/kainsaz2.jpg And that Kainsaz has no cracks... -----Urspr?ngliche Nachricht----- Von: meteorite-list-bounces_at_meteoritecentral.com [mailto:meteorite-list-bounces_at_meteoritecentral.com] Im Auftrag von Adam Hupe Gesendet: Dienstag, 18. Juli 2006 20:37 An: meteorite-list_at_meteoritecentral.com Betreff: Re: Re: [meteorite-list] Norwegian meteorite classificationguessinggame Here is a great image on Mike Farmer's site that shows the contraction cracks on a CO3 fall, Thank you Martin Altmann for providing this link earlier. If you look very closely, you will see the faint webwork of contraction cracks so typical of CO3s: http://www.meteoriteguy.com/collection/images/kainsaz/DSCN5252-cp.jpg Take Care, Adam ----- Original Message ----- From: "Adam Hupe" <raremeteorites_at_comcast.net> To: <meteorite-list_at_meteoritecentral.com> Sent: Tuesday, July 18, 2006 11:23 AM Subject: Re: Re: [meteorite-list] Norwegian meteorite classification guessinggame > 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 ______________________________________________ Meteorite-list mailing list Meteorite-list_at_meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list Received on Tue 18 Jul 2006 03:20:48 PM PDT |
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