[meteorite-list] help me in understand analysis

From: Francesco Moser <cojack_at_meteoritecentral.com>
Date: Fri, 6 Oct 2017 13:30:21 +0200
Message-ID: <000a01d33e96$7f5d16e0$7e1744a0$_at_tiscali.it>

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!


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Received on Fri 06 Oct 2017 07:30:21 AM PDT

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