[meteorite-list] Shirokovsky

[Marcin Cimala]

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

=====
Adam, from two choices, I whould like to have Shiro + Putorano slices in my 
collection, than moskito killed? by meteorite or a big piece of someones 
roof with a tiny micromount of his hammer stone. Ofcourse its my choice.
Anyway, if someone can change his car engine into a piece of iron with 
Thompson structures after etching I will be interested in a slice too :))))

If someone questioning Your collection becouse You have some known 
meteor-wrongs or meteorite catsts then he must be ignorant who thinks he 
know more about collection than this collector. But at the end (I think) we 
collecting for Yourself, so other persons opinions are not most importand 
for us. (*).

Its my hobby, and I know best what I have in my boxes

(*) in the case if questioning person know not much about meteorites.



-----[ MARCIN CIMALA ]-----[ I.M.C.A.#3667 ]-----
http://www.Meteoryty.pl             marcin(at)meteoryty.pl
http://www.PolandMET.com       marcin(at)polandmet.com
http://www.Gao-Guenie.com      GSM: +48 (793) 567667
--------[ Member of Polish Meteoritical Society ]--------


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----- Original Message -----
From: Bernd V. Pauli <bernd.pauli at paulinet.de>
To: meteorite-list at meteoritecentral.com
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


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