[meteorite-list] R: help me in understand analysis

From: cdtucson at cox.net <cdtucson_at_meteoritecentral.com>
Date: Sun, 8 Oct 2017 12:11:08 -0400
Message-ID: <20171008121108.JPH8Y.13283.imail_at_fed1rmwml302>

Francesco, Just found another reference to Lunar rock 12039 by Bunch (not a meteorite) and I stand corrected. It has a bulk SiO2 of 47.3 % and also Calcalong Creeks bulk chemestry of SiO2 is actually 47.18. So, actually, Well within the Lunar range. I'd get it tested. see link below

https://www.researchgate.net/publication/23878123_Mineralogy_petrology_and_chemistry_of_lunar_rock_12039
Carl

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Love & Life
---- Carl Esparza via Meteorite-list <meteorite-list at meteoritecentral.com> wrote: 
> Francesco, This puts the Fe/Mn ratio at 74.84. This is indeed within the Lunar range of the most famous lunar meteorite "Calcalong Creek". I possess the results of the actual study and the range based on various samples ranges from 67.3 to 72 so, that does not rule it out as being Lunar. The high SiO2 makes it doubtful but, Lunars require extensive research. I'd have it tested by a lab to be sure. 
Carl
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Love & Life
---- Francesco Moser <cojack at tiscali.it> wrote: 
> I forget Mn, sorry!
> MnO	0.13%
> 
> 
> Thanks
> 
> <x>x<x>x<x>
> Francesco
> 
> 
> -----Messaggio originale-----
> Da: cdtucson at cox.net [mailto:cdtucson at cox.net] 
> Inviato: venerd? 6 ottobre 2017 15:50
> A: Francesco Moser <cojack at tiscali.it>
> Cc: Francesco Moser via Meteorite-list <meteorite-list at meteoritecentral.com>
> Oggetto: Re: [meteorite-list] help me in understand analysis
> 
> I don't see the Mn percent. That is needed to get an Fe/Mn ratio. 
> Carl
> --
> Love & Life
> 
> ---- 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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Received on Sun 08 Oct 2017 12:11:08 PM PDT