I guess collecting artifacts has made me leery about fakes. Get caught with one fake artifact and it will put your entire collection in question. It is best to get artifacts papered and destroy any that have been "killed" by an independent authenticator. I see Shirokovsky as being off topic since it is not a meteorite and is was only produced in order to defraud honest collectors out of their hard earned money.
If you want a piece of a recycled old Ford motor block in your collection, that is your business. To me, it is garbage and so are the people who produced it! Adam ----- Original Message ----- From: Bernd V. Pauli <[email protected]> To: [email protected] Cc: Sent: Friday, August 19, 2011 1:50 PM Subject: [meteorite-list] Shirokovsky Hello All, Shirokovsky is terrestrial, it is a pseudo-meteorite, it is man-made! - does not contain typical accessory phases of stony-iron meteorites - accessory phases completely atypical - Olivine has a terrestrial oxygen isotopic composition - Pt/Ir ratio similar to that of terrestrial Cu-Ni ore deposits - has never been in space (noble gases no cosmic component!) - absence of cosmic-ray tracks corroborates noble gas study results (= bestätigen) - Olivine TL spectra similar to terrestrial peridotites Conclusion: Shirokovsky is manufactured, man-made! As for its nickel contents, see also the entry in the (online) Met.Bull. ... and, yes, I have a thin 2.7 gr slice of Shirokovsky with translucent olivines. I got that pseudo-pallasite in 2003 from Eric Olson. It doesn't pollute my collection but it sure looks a bit "pale-faced" when sitting next to a genuine pallasite like Esquel, Brenham, Admire, etc. Cheers, Bernd ______________________________________________ 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
