Correction. typo. NWA 5400 has 4820 grams not 4280 grams (TYPO) . so add 540 grams to the total. Now we're at 14,530 grams. TKW. -- Carl or Debbie Esparza Meteoritemax
---- [email protected] wrote: > The following is a list of the official pairings and approximate TKW so far > for this amazing Brachinite-like meteorite > > NWA 5400. 4280. grams > NWA 6292. 725. grams. > NWA 6077. 1000. grams > NWA 5363 7985. grams. > > Total. 13,990. grams. > > > -- > Carl or Debbie Esparza > Meteoritemax > > > ---- John higgins <[email protected]> wrote: > > Greg Catterton, > > > > I would be very cautious with throwing loose words around "like considering > > all > > the pairings" > > As far as I know NWA 6077 is the only whole stone other than NWA 6292 of > > which > > is very fragmented that has conclusively been paired through testing and > > subsequent testing to NWA 5400, from what I understand most of the others > > are > > purely conjecture, or speculative without the extensive testing completed > > or in > > various stages of testing... > > I think our focus should be on the Science and authenticity of claims > > before you > > start making bets and psychic predictions about how much more material is > > paired > > to this very special and important meteorite. > > > > > > Regardless of what you think, and however hard you try to knock this > > meteorite > > for TKW, of what may or may not come to fruition, this meteorite is > > priceless to > > Science. I don't understand what the focus on TKW boils down to other than > > monetary value or jealousy, this meteorite truly transcends price. And I > > think > > the focus should be on the science of what this meteorite can teach us > > about our > > past. And possibly give us clues to the future. NWA 6077 is a Meteorite > > that has > > most likely come from the mantle of a planet, which one? The Oxygen Isotope > > results suggest one like our own planet Earth. Even if there are 10kg or > > more, > > this meteorite is from the mantle of a planet that is similar to our own > > and > > comes from a place in time that does not exist anymore. I hope we can, as a > > community become more productive with our time and focus on figuring out > > what > > the meteorite parent body is and what the conditions are that existed when > > it > > materialized. I suggest we shift the emphasis to the scientific study > > rather > > than putting such a great focus on prematurely rushing TKW statistics, that > > can > > only be revealed only after many more years of scientific studies. > > > > Regards, > > John Higgins > > IMCA# 9822 > > > > > > > > ----- Original Message ---- > > From: Greg Catterton <[email protected]> > > To: [email protected]; John higgins <[email protected]> > > Sent: Tue, October 5, 2010 12:01:35 PM > > Subject: Re: [meteorite-list] Official Announcement NWA 6077 is Paired with > > NWA > > 5400 > > > > Its great that there is such a nice amount of this material when > > considering all > > the pairings... With over 10kg of this material in pairings known so far, I > > am > > willing to bet there is likely a good amount more still. > > I bet the Brachinties are coming out of the woodwork to be tested. > > > > Greg Catterton > > www.wanderingstarmeteorites.com > > IMCA member 4682 > > On Ebay: http://stores.shop.ebay.com/wanderingstarmeteorites > > On Facebook: http://www.facebook.com/WanderingStarMeteorites > > > > > > --- On Tue, 10/5/10, John higgins <[email protected]> wrote: > > > > > From: John higgins <[email protected]> > > > Subject: [meteorite-list] Official Announcement NWA 6077 is Paired with > > > NWA > > >5400 > > > To: [email protected] > > > Date: Tuesday, October 5, 2010, 9:26 AM > > > Official Announcement > > > > > > NWA 6077 IS PAIRED WITH NWA 5400 > > > > > > North West Africa 6077 Description: > > > An olivine-rich assemblage with cumulate (or possibly > > > metamorphic) texture > > > exhibiting triple junction grain boundaries. Olivine > > > (Fa30.2-30.7), > > > orthopyroxene (Fs24.1-24.5Wo2.1-2.0), clinopyroxene > > > (Fs9.4-10.0Wo44.0-43.5), > > > altered kamacite, chromite, chlorapatite, Ni-bearing > > > troilite and/or pyrrhotite. > > > No plagioclase was found. Analysis conducted at the > > > Carnegie Institution of > > > Washington show that the oxygen isotopic composition of > > > this specimen plots on > > > the Terrestrial Fractionation Line. In conjunction with the > > > mineral compositions > > > and texture, this establishes that NWA 6077 is paired with > > > NWA 5400. > > > > > > The averages of the two Oxygen Isotope Results are: > > > d17O = 2.780, d18O = 5.358, D17O = -0.019 (all in per mil) > > > > > > This brachinite was recovered out of Morocco in 2008 as > > > one whole stone and > > > purchased by John Higgins. It was submitted for > > > classification to Dr. Tony > > > Irving and was given the provisional classification number > > > of NWA 6077. This > > > meteorite has a modest TKW of less than 1000g after the > > > type specimen was > > > removed. > > > > > > Personal Notes: Although I suspected that the two were > > > possibly paired due to > > > similarities in visual observations and classification > > > compositions, I felt it > > > was important to wait for secondary Oxygen Isotope results > > > to come in which have > > > recently confirmed the results beyond a reasonable doubt. > > > There was also another > > > important factor besides Oxygen Isotope testing that had > > > to be taken into > > > account. Orthopyroxene which is present in NWA 5400 was > > > missed the first time > > > around in NWA 6077 because it looks identical to > > > clinopyroxene in back-scattered > > > electron images. However further in-depth > > > microprobe studies of the thin section > > > have confirmed the presence of orthopyroxene, and are > > > now noted in the updated > > > description. I feel that making a self pairing based upon > > > my own > > > visual observations, is not only unethical, inappropriate, > > > and akin to pirating, > > > but would only feed the controversies regarding this > > > meteorite without the > > > scientific testing data to back up such speculation, such > > > action would be > > > premature, immoral and unfair to Greg Hupe and NWA 5400 > > > after all the time and > > > effort he put into the study of what has become one of the > > > most important > > > meteorite finds in history. > > > > > > Have a Great Day! > > > John Higgins > > > IMCA#9822 > > > > > > > > > > > > ______________________________________________ > > > Visit the Archives at > > >http://www.meteoritecentral.com/mailing-list-archives.html > > > Meteorite-list mailing list > > > [email protected] > > > http://six.pairlist.net/mailman/listinfo/meteorite-list > > > > > > > > > > > ______________________________________________ > > Visit the Archives at > > http://www.meteoritecentral.com/mailing-list-archives.html > > Meteorite-list mailing list > > [email protected] > > http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
