[meteorite-list] help me in understand analysis

From: Adam Hupe <raremeteorites_at_meteoritecentral.com>
Date: Fri, 6 Oct 2017 08:59:42 -0700
Message-ID: <086d8f29-747a-4724-b540-59aa21910778_at_centurylink.net>

It is best to avoid this type of material altogether. It appears to be
another self-paired stone being offered up as a planetary piece. Most
collectors realize that without formal classification by a recognized
laboratory and name assignment by the Meteoritical Society, the material
is consider just a rock and not a meteorite. In other words, it is
worthless. Many collectors have been fooled already by the influx of
these stones and are asking for refunds after realizing, there is no
secondary market for this material.

Adam



On 10/6/2017 4:30 AM, Francesco Moser via Meteorite-list wrote:
> Hello!
> a man have send me some pictures of a dozen stones and asked me wich types
> of meteorites could be.
> I answered that for me those materials are terrestrial.
> But he tell me that for sure the stones are lunar meteorites :)
> He has send me this analysis for proving the lunar origin of the stones.
> I'm not able to understand this data, please someone could take a look and
> tell me if this material could be terrestrial or extra-terrestrial.
> No other analysis was done on the stones. I guess that without an oxigen
> isotopes abundance ratio is impossible to identify a lunar rock, isn't?
>
> Method LF200
>
> SiO2 47.45%
> Al2O3 19.42%
> Fe2O3 9.73%
> MgO 10.16%
> CaO 8.95%
> Na2O 1.75%
> K2O 0.79%
> TiO2 0.29%
> P2O5 0.08%
> Cr2O3 0.01%
> Ba 110ppm
> Ni 121ppm
> Sc 7ppm
>
> I Have also a detailed list of trace elements.
>
> This man tell me that the presence of K2O and P2O5 confirm the
> extra-terrestrial origin of the rocks.
>
> Thanks a lot in advance!
>
> <x>x<x>x<x>
> Francesco
>
>
>
>
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Received on Fri 06 Oct 2017 11:59:42 AM PDT