[meteorite-list] Interpreting meteorite classification

From: Matson, Robert D. <ROBERT.D.MATSON_at_meteoritecentral.com>
Date: Mon, 18 Oct 2010 14:26:39 -0700
Message-ID: <9180F6B27399C541B10663E21C8BDE92707EB9_at_0461-its-exmb09.us.saic.com>

Hi Mike,

Indicates the number of individual measurements made of the indicated
parameter in order to determine the 1-sigma standard deviation. So,
"Fa 14.4 +/- 0.5 (n=7)" means that seven measurements were made for
fayalite (olivine), the mean value was 14.4 and the standard deviation
was 0.5. --Rob

-----Original Message-----
From: meteorite-list-bounces at meteoritecentral.com [mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Michael Fowler
Sent: Monday, October 18, 2010 2:22 PM
To: meteorite-list at meteoritecentral.com
Cc: Michael Fowler
Subject: Re: [meteorite-list] Could we get back to the science of meteorites, please ?

List,

Could someone explain the meaning of the numbers in parenthesis? (n=7) and (n=11) is the analysis below?

Thanks in advance.

Mike Fowler


> NOVA 010
>
> W2 S3, olivine Fa 14.4 ?0.5 (n=7); low-Ca pyroxene Fs13.7 ?0.6, Wo0.6
> ?0.3 (n=11)
Received on Mon 18 Oct 2010 05:26:39 PM PDT