[meteorite-list] Samples
From: Michael Farmer <meteoriteguy_at_meteoritecentral.com>
Date: Thu, 27 Dec 2007 18:36:03 -0800 (PST) Message-ID: <50823.81178.qm_at_web33102.mail.mud.yahoo.com> I have to agree, I will not cut a spectacular oriented meteorite, I don't care what it is. If it is a chondrite, who cares if it is an H5 or L4, it changes nothing, little or no science is to be gained. I am not talking about a large meteorite, I can see cutting a small piece off of something large, but these people who cut a 10 gram shield in half to look at the inside really make me mad. Michael Farmer --- Bob Evans <bobe5531 at comcast.net> wrote: > Don, > You touched a nerve there. I hate it when I see an > incredible oriented > meteorite and then realize that it has been cut or > ground for a window. > I ve seen a couple recently that I would love to > have in my collection and > was willing to pay top dollar until I seen the cut ( > even on the backside ) > and then the value dropped by 80 % in my eyes. > All dealers should really know what they are doing > before they ruin an > oriented meteorite. > > Bob > ----- Original Message ----- > From: "Don Rawlings" <psc2410xi at yahoo.com> > To: <meteorite-list at meteoritecentral.com> > Sent: Thursday, December 27, 2007 8:13 PM > Subject: Re: [meteorite-list] Samples > > > > Doug and listees: > > > > I find it amazing that some dealers are only too > > willing to destroy the beauty of an oriented > meteorite > > which is obviously a common type to get it > classified > > and then refuse to get a rare meteorite classified > > because they think it "looks like" something > someone > > else has. > > > > How is the collector, or his/her heirs, going to > sell > > that rare meteorite that was never classified? It > may > > seem like a bargain at the time to buy a field > > classified meteorite but there will come a time > when > > it will most likely be considered worthless in the > > secondary market. > > > > Your advise is certainly sound. > > > > Don > > > > --- mexicodoug <mexicodoug at aol.com> wrote: > > > >> Hi Tim, > >> > >> OK, I guess the first thing I assumed (and > possibly > >> Mike did, too) was since > >> you called it a fall it was like Gao-Guenie: a > >> witnessed fall. > >> > >> But since you are apparently discussing an > >> unwitnessed fall from a hot > >> desert a.k.a. for us, dense collecting area > (don't > >> know where else to get > >> all those Mars rocks), the best thing to do is to > >> plot the strewn field. In > >> the contemporary world that seems so difficult > since > >> we can't even get > >> location information for one stone that has > already > >> been through maybe > >> several hands. > >> > >> So I only see two options or combinations between > >> them: > >> > >> 1) Don't buy anything that is not documented. > >> Discourage others supporting > >> this. > >> 2) Buy everything under an agreement of trust > from a > >> reputable seller and > >> submit the batch to a scientist and let him/her > >> minimize the guesswork and > >> possibly minor tests if doubts come up. Or in a > >> positive light, to convince > >> the scientist to say the batch is the same > material > >> or cull out what is not > >> to arrive at the TKW. > >> > >> If you want to by Mars without any formal > >> classification, in the form of > >> many pebbles, there is no solution except 2), > >> whether you go it alone or > >> spread the risk with partners. Because you would > >> now be representing a rock > >> that has been subjectively field "classified". > >> While some people can live > >> with this, others can't. If you can at least get > >> locational information for > >> your specimens, you don't have to give the full > >> 20/20 - or anything for that > >> matter if enough to meet the combined 20/20 is in > >> curation as vouchers for > >> the group after the naming of your material - if > a > >> scientist agrees to > >> classify and pair it to an existing > classification. > >> This is the motivation > >> of the newer guidelines. > >> > >> Some people get mad about subjective > classification, > >> because they broke the > >> ground on the sample and "invested", while others > >> are pissed that it is > >> obvious and common sense dictates the material is > >> what it is (arguments > >> like, bought from the same trader, got from the > same > >> nomad, found together): > >> with no further support except subjective > judgements > >> perceived as strong and > >> well founded. > >> > >> This latter may be true, but that still doesn't > >> remove the reality. Only if > >> the specimens fit together can this be foolproof. > >> Even an expert meteorite > >> hunter scientist can find or purchase a handful > of > >> meteorites in the field > >> from a known fall and every once in a while a > >> terrestrial rock can sneak in > >> that has you fooled like a baby. Let me say it > has > >> happened to me, and it > >> is a very frustrating and humbling experience. > Some > >> time I'll tell the > >> story of a meteorwrong that saw me coming it was > a > >> remarkable fraud that > >> would surprise anyone - the best scientists, at > >> their first glance, > >> included. > >> > >> So, the reality is also that unless each rock is > >> carefully studied, nothing > >> can avoid ocassional duds getting mixed in. Not > to > >> mention incorrect > >> pairing of similr meteorites. Luckily in the > sandy > >> desert this isn't as > >> great a problem as areas with varieties of rocks. > >> > >> How Unsettling, How Disagreeable to the innocent > >> collector and enthusiast, > >> scientist alike- but true. This is rthe dirty > >> laundry of meteorite > >> collecting. Hopefully someone has a better > >> suggestion, but I wouldn't hold > >> my breath unless I were an alchemist capable of > >> ethically transmuting > >> batches of meteorites ;-) There is no free > lunch... > >> and no one can make > >> promises for something that hasn't been done. (Or > >> can they?) > >> > >> This whole thing gets sticky, when, you buy > >> meteorites from the literally > >> same batch that another person has already > >> classified. Sure: you may have > >> the same material, but then again, just because > the > >> original buyer may not > >> have demanded 100% error proffing during the > >> classification and is selling > >> some stones under the classification he got, > doesn't > >> make yours any more > >> paired to the ones that were used for the typing > >> work. > >> > >> Best wishes, Doug > >> > >> > >> ----- Original Message ----- > >> From: "Timothy Heitz" <midwest at meteorman.org> > >> To: "mexicodoug" <mexicodoug at aol.com>; > >> <meteorite-list at meteoritecentral.com> > >> Sent: Thursday, December 27, 2007 12:47 PM > >> Subject: Re: [meteorite-list] Samples > >> > >> > >> > Doug, > === message truncated === Received on Thu 27 Dec 2007 09:36:03 PM PST |
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