[meteorite-list] help me in understand analysis

[Alfredo Petrov]

Well, we would have all died of starvation long ago if terrestrial rocks
didn't contain K and P.
 ;))

On 6 October 2017 at 20:30, Francesco Moser via Meteorite-list <
meteorite-list at meteoritecentral.com> 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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