[meteorite-list] petrological type

From: Francesco Moser <cojack_at_meteoritecentral.com>
Date: Fri, 11 Apr 2014 19:14:55 +0200
Message-ID: <001001cf55a9$8f8473d0$ae8d5b70$_at_tiscali.it>

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
something.

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

Ciao

<x>x<x>x<x>
Francesco
Received on Fri 11 Apr 2014 01:14:55 PM PDT