[meteorite-list] old woman meteorite

From: MexicoDoug_at_aol.com <MexicoDoug_at_meteoritecentral.com>
Date: Wed Jan 4 00:59:13 2006
Message-ID: <23d.4b2171a.30ecbe2c_at_aol.com>

Adam and the anonymous commentator: Actually, it is a very good scientific
question. The person who asked was obviously thinking about sedimentary
layers in the mountains or their favorite geology text, or maybe the discovery
channel.

I'd rephrase the answer to be:
Shale in geology is the fragmentary-type sedimentary layer that splits in a
planar manner usually has high silicate content from the clays it formed
originally from (with the help of sea creatures). Clays, very frequently absorb
water in sheet like macromolecules with high silicates so you can see where
the planar shale splitting derives from...You can have a sedimentary shale
high in Calcium (calcium carbonate) from skeletons and shells typically in
ancient water sites. Coals are also shales (remember the "strip" miners - an
illusion to this planar like splitting), when the same types of materials get
carbonaceous.

In the case of the iron meteorite, or for that matter, an old buried Colt 45
or horseshoe, the iron rusts in a manner that is layered, and splits off in
a planar manner....Voila - it can also be called shale for this planar
splitting characteristic. Just like an onion rind, not to be confused with the
onion rind model of asteroids!

Saludos, Doug
(Hoping to bring my iron pick to a far far away eucrite shale sometime and
look for nice "diogenite crystals"!)



In a message dated 1/3/2006 10:58:39 P.M. Eastern Standard Time,
raremeteorites_at_comcast.net writes:
Somebody asked the following question off-list. I will attempt to answer it:

Question:
I am just wondering how a totally Iron body can be converted to shale just
two Kilometers from the original find. No offense, but isn't shale pretty
much silicon?

Waiting to be set straight.

Answer:
It is converted to iron shale when it becomes weathered or terrestrialized
(oxidized). This is a well-known
occurrence as far as iron meteorites go. Canyon Diablo can be found as both
iron shale and in elemental iron form depending on the degree of weathering.

Kind Regards,

Adam



----- Original Message -----
From: "Adam Hupe" <raremeteorites_at_comcast.net>
To: <meteorite-list_at_meteoritecentral.com>
Sent: Tuesday, January 03, 2006 6:27 PM
Subject: Re: [meteorite-list] old woman meteorite


> Dear List,
>
> I have a confirmed piece of the Old Woman meteorite. It was found within 2
> kilometers of the original Old Woman at a lower elevation prone to
moisture.
> Even though my piece has been converted to mainly shale with only a few
> specks of elemental iron showing, Dr. Ted Bunch was able to chemically
match
> the two and there are not too many Coarse Octahedrites with a massive 1
> centimeter bandwidth running around. Here are some links if you want to
> check it out. I have it in my safe deposit box so I cannot check the
weight
> after a piece was submitted for study. I believe it still weighs about 130
> grams or so.
>
> Here are the links:
> http://themeteoritesite.com/OldWoman.jpg
> http://themeteoritesite.com/OldWoman-a.jpg
> http://themeteoritesite.com/OldWoman.-b.jpg
>
>
> Take Care,
>
> Adam
>
>
> ----- Original Message -----
> From: "Steve Arnold, Chicago!!" <steve_arnol60120_at_yahoo.com>
> To: <meteorite-list_at_meteoritecentral.com>
> Sent: Tuesday, January 03, 2006 3:56 PM
> Subject: [meteorite-list] old woman meteorite
>
>
> > Hi list.I am just wondering if any of the old woman meteorite has ever
> > been offered up to collecters?
> >
> >
> > steve arnold, chicago
> >
> > Steve R.Arnold, Chicago, IL, 60120
> >
> >
> > Illinois Meteorites,Ltd!
> >
> >
> > website url http://stormbringer60120.tripod.com
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > __________________________________________
> > Yahoo! DSL - Something to write home about.
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> > dsl.yahoo.com
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Received on Wed 04 Jan 2006 12:59:08 AM PST