[meteorite-list] Chondritic parent bodies

From: bernd.pauli at paulinet.de <bernd.pauli_at_meteoritecentral.com>
Date: 09 Sep 2009 19:03:24 UT
Message-ID: <DIIE.0000002F00003FFF_at_paulinet.de>

Hello All,

I'm really glad that Jeff G. responded because I didn't know whether or not I should
mention his thoughts of about 10 years ago (!) when I asked him about hyphens and
dashes and the confusion they cause! I was inquiring about DaG 140, then classified
as an H3.9-6.

Mon, 07 Sep 1998, Jeff wrote (excerpt):

1) The hyphen implies a continuous range, and also implies that there
is no dominant lithology in the breccia. Yet, DaG 140 could be:

a) a type 3 chondrite with a single equilibrated clast found;
b) a type 6 chondrite with a single type 3 clast found;
c) a mixture of types 3, 4, 5, and 6 material;
d) a light-dark breccia with mostly comminuted matrix and only a few clasts, including type 3 and 6 ones.

So, right now we have a literature polluted with this and other nomenclatures
(like using a "/" instead of a "-" for the same thing), ...

Slashes (e.g., L5/6) indicate transitional classes, hyphens (e.g., H5-6) indicate breccias, ...

Best wishes,

Bernd
Received on Wed 09 Sep 2009 03:03:24 PM PDT