Hi Ruben and List,
As Jeff Grossman already stated the primitive achondrite
vs. LL7 isssue is highly controversial but here are some
criteria and examples culled from the literature:
1) Dodd (1981) lists three criteria that can be used to
distinguish between types 6 and 7 ordinary chondrites:
To: Meteorite List meteorite-list@meteoritecentral.com
Sent: Mon, Dec 5, 2011 8:23 pm
Subject: [meteorite-list] Primitive Achondrite Question
Hi all,
I just bought a smallish collection and several of the slices that
came with are NWA 3100. Mike Farmer's card was included and lists NWA
3100
meteorite-list@meteoritecentral.com
Sent: Tue, Dec 6, 2011 7:38 am
Subject: Re: [meteorite-list] Primitive Achondrite Question
Some PACs do in fact contain relict chondrules, especially
acapulcoites and winonaites.
Some chondrites have no chondrules (CIs and highly altered ones, plus
some type 6
Doug wrote: I can't wait until someone turns up a CV6+. Theoretically, there
is no reason to
bar the possibility,, or is there...
NWA 3133 is a CV Primitive Achondrite
All of these oxygen isotope compositions
plot on the CV3 mixing line, suggesting that this achondritic meteorite has
: Adam Hupe raremeteori...@yahoo.com
To: Adam meteorite-list@meteoritecentral.com
Sent: Tue, Dec 6, 2011 11:47 am
Subject: Re: [meteorite-list] Primitive Achondrite Question
Doug wrote: I can't wait until someone turns up a CV6+. Theoretically,
there is
no reason to
bar the possibility
To: raremeteori...@yahoo.com; meteorite-list@meteoritecentral.com
Sent: Tuesday, December 06, 2011 9:31 AM
Subject: Re: [meteorite-list] Primitive Achondrite Question
Adam wrote:
NWA 3133 is a CV Primitive Achondrite
Hi Adam, thanks ... The asteroid belt ought to be called the asteroid zoo
)
-Original Message-
From: Alan Rubin aeru...@ucla.edu
To: raremeteorites raremeteori...@yahoo.com; meteorite-list
meteorite-list@meteoritecentral.com
Sent: Tue, Dec 6, 2011 1:05 pm
Subject: Re: [meteorite-list] Primitive Achondrite Question
I thought I would add my tuppance worth. I don't use
: [meteorite-list] Primitive Achondrite Question
Adam wrote:
NWA 3133 is a CV Primitive Achondrite
Hi Adam, thanks ... The asteroid belt ought to be called the asteroid zoo!
The question I have on this one, if CV is for certain, would be whether it
is the result of a collision with a typical CV
Hi All,
Alan kindly wrote:
George Merrill's The Story of Meteorites from 1929:
There are andrites, eukrites, shergottites, howardites, bustites,
chassignites, chladnites, amphoterites, howarditic chondrites, white
chondrites, intermediate chondrites, gray chondrites, black chondrites,
Ted, Jeff, Doug, list,
Given what we now know about Almahatta Sita and how the classification type
depends largely on what sample piece is being tested at the time.
Couldn't this help explain why your (Ted's) Butt has been getting the workout
as of late?
Maybe you were right all along and
Hiya,
Just ramping into this thread---which fascinates. Thank you!
All best / Darryl
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Sent: Tuesday, December 06, 2011 9:31 AM
Subject: Re: [meteorite-list] Primitive Achondrite Question
Adam wrote:
NWA 3133 is a CV Primitive Achondrite
Hi Adam, thanks ... The asteroid belt ought to be called the asteroid
zoo!
The question I have on this one, if CV
To: raremeteori...@yahoo.com; meteorite-list@meteoritecentral.com
Sent: Tuesday, December 06, 2011 9:31 AM
Subject: Re: [meteorite-list] Primitive Achondrite Question
Adam wrote:
NWA 3133 is a CV Primitive Achondrite
Hi Adam, thanks ... The asteroid belt ought to be called the asteroid zoo
Hi all,
I just bought a smallish collection and several of the slices that
came with are NWA 3100. Mike Farmer's card was included and lists NWA
3100 as an LL7. The Met-Bul calls NWA 3100 a Primitive achondrite -
not an LL7.
My question is this,
Does LL7 denote a particular Primitive
Type 7 is considered by most of those who use it to represent the
highest degree of thermal metamorphism that a chondrite can experience
without melting. As implied in that first sentence, some petrologists
don't distinguish these from type 6. The term primitive achondrite is
widely taken to
mrmeteor...@gmail.com
To: Meteorite List meteorite-list@meteoritecentral.com
Sent: Mon, Dec 5, 2011 8:23 pm
Subject: [meteorite-list] Primitive Achondrite Question
Hi all,
I just bought a smallish collection and several of the slices that
came with are NWA 3100. Mike Farmer's card was included
Well stated Jeff and I agree! Thank you. There is the thing about
metachondrite terminology, but we shall leave this dead horse alone for
the time being.
Two of these unremitting classification issues in 3 days is much too much
for me in one week, especially when my butt is tied to both of them.
jngross...@gmail.com;
meteorite-list@meteoritecentral.com
Sent: Monday, December 05, 2011 10:00 PM
Subject: Re: [meteorite-list] Primitive Achondrite Question
Well stated Jeff and I agree! Thank you. There is the thing about
metachondrite terminology, but we shall leave this dead horse alone
to, John.
- Original Message - From: Ted Bunch tbe...@cableone.net
To: Jeff Grossman jngross...@gmail.com;
meteorite-list@meteoritecentral.com
Sent: Monday, December 05, 2011 10:00 PM
Subject: Re: [meteorite-list] Primitive Achondrite Question
Well stated Jeff and I agree! Thank you
jngross...@gmail.com
Sent: Mon, Dec 5, 2011 11:02 pm
Subject: Re: [meteorite-list] Primitive Achondrite Question
Hi all,
Thanks Jeff and Doug.
Sorry Ted, I've been out of town and haven't followed any other
similar conversation so I wasn't aware it was a touchy subject.
However, since we're here
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