[meteorite-list] Looking for Happy meteorite goodness

From: Gary Fujihara <fujmon_at_meteoritecentral.com>
Date: Fri, 01 Nov 2013 06:58:17 -1000
Message-ID: <CD7E3E5C-D455-47A8-8C95-A86AC4488E07_at_mac.com>

Aloha Jason,

Gao Chergach, Pultusk falls produced significantly less melt pieces than Chelyabinsk. My guess is you?d be lucky to find a Gao, Chergach or Pultusk IMB in 25-50 stones (or more), versus one in 3 for Chelyabinsk. Because of this, I do not believe researchers where aware of IMB, much less supplied IMB specimens for analysis at the time.

I believe most meteoriticists are interested in IMB derivatives of meteorites to a degree or more, but they cannot characterize what they do not have in lab. Therefore no writeup on their reports in the Metbull. Secondarily, I notice that many early Metbull reports on meteorites were quite terse.

gary

On Oct 30, 2013, at 12:00 PM, Jason Utas <meteoritekid at gmail.com> wrote:

> Hello All,
> Gao, Chergach, Pultusk, and other ordinary chondrites often have their
> impact melt portions ignored when being characterized. Chelyabinsk
> would be the most recent obvious example of this -- "LL5 S4 W0"
> Except, when you read the petrographic description:
>
> "...A significant portion (1/3) of the stones consist of a dark,
> fine-grained impact melt containing mineral and chondrule fragments.
> Feldspar is well developed and practically isotropic. No high-pressure
> phases were found in the impact melt. There are black-colored thin
> shock veins in both light and dark lithologies."
>
> http://www.lpi.usra.edu/meteor/metbull.php?code=57165
>
> We collectors see impact melt and think it's cool, but it's secondary
> information for the classification, I think.
>
> Regards,
> Jason
>
> www.fallsandfinds.com
>
>
> On Wed, Oct 30, 2013 at 6:35 AM, Jim Wooddell
> <jim.wooddell at suddenlink.net> wrote:
>> On 10/30/2013 6:02 AM, Marc Fries wrote:
>>>
>>> Let me try that again with a more accurate Subject line...
>>> Hi Marc!
>>
>> Looking at the pictures and the lack of information in the bulletin, this
>> one would be worthy of another stab at classification! Happy (b) and (c)
>> could use some new work too!
>>
>>
>>
>> Jim
>>
>>
>>
>>
>>> On Oct 29, 2013, at 11:27 AM, Marc Fries wrote:
>>>
>>>> Howdy all
>>>>
>>>> I'm looking for a meteorite to buy or borrow for a scientific study.
>>>> Does anyone have a piece of Happy(a)? It is listed as an H3 but appears to
>>>> be an impact melt, at least in part. Please contact me off-list at
>>>> mfries8 at hotmail.com
>>>>
>>>> Cheers,
>>>> Marc Fries
>>>>
>>
>>
>> --
>> Jim Wooddell
>> jim.wooddell at suddenlink.net
>> http://pages.suddenlink.net/chondrule/
>>
>>
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Gary Fujihara
Big Kahuna Meteorites Inc.
PO Box 4175, Hilo, HI 96720
(808) 640-9161
http://bigkahuna-meteorites.com/
http://www.ebay.com/sch/fujmon/m.html
Received on Fri 01 Nov 2013 12:58:17 PM PDT