[meteorite-list] petrological type
From: Mark Bowling <minador_at_meteoritecentral.com>
Date: Fri, 11 Apr 2014 22:01:25 -0700 (PDT)
Are there any better alternatives that could someday replace the current one, and do you have any references/links for them?
From: Jeff Grossman <jngrossman at gmail.com>
To: meteorite-list at meteoritecentral.com
Sent: Friday, April 11, 2014 5:22 PM
Subject: Re: [meteorite-list] petrological type
Answer: you can't.? The classification scheme is lousy.
On 4/11/2014 1:21 PM, Michael Mulgrew wrote:
> Two sequences, one for aqueous alteration and one for thermal
> metamorphism (http://www.meteoritemarket.com/PetTypeGroup.jpg).? Makes
> one wonder how we would classify a meteorite that is both thermally
> and aqueously altered...
Michael in so. Cal.
> IMCA 3963
> On Fri, Apr 11, 2014 at 10:14 AM, Francesco Moser <cojack at tiscali.it> wrote:
>> Hello, I have a question about chondrites' petrological type number assigned
>> after the letters (like H, L, CM or CR ...).
>> I have just read something in internet but I think I have misunderstood
>> Are the numbers from 1 to 7 in sequence or there are two different
>> sequences: 1 to 2 - 3 to 7 ??
>> 1 to 2 is for the aqueous alteration degree in carbonaceous chodrites (1
>> high degree, 2 low degree)
>> 3 to 7 is for thermal metamorphism? degree?
>> Thanks a lot
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Received on Sat 12 Apr 2014 01:01:25 AM PDT