[meteorite-list] Hoba shale or not shale?

[Frank Cressy]

Shawn & listees;
 
Hoba is an ataxite so etched metal would not show a Widmanstatten pattern.  Etched Hoba metal shows an "oriented sheen" on a large etched slice; a small part slice prpbably wouldn't show it.
 
Frank

From: Shawn Alan <photophlow at yahoo.com>
To: 1 2 <meteoritemike at gmail.com>; Meteorite Central <meteorite-list at meteoritecentral.com> 
Sent: Tuesday, January 21, 2014 11:37 PM
Subject: Re: [meteorite-list] Hoba shale or not shale?


Hello Mike G & Listers

I would think if your able to make an etch, that part would be iron, but again, its in cased in
shale. I guess it would be both and whoever is buying or selling would have to
disclose that and the buyer would have to pay accordingly to what is the market price for shale/iron.
But at the end of the day, having Hoba in your collection is a feat to accomplish if its shale or not.

Shawn Alan
IMCA 1633  
ebay store 
http://www.ebay.com/sch/imca1633nyc/m.html
http://meteoritefalls.com/


















Hi Folks, I have seen shale or oxide fragments that had unoxidized metal inside
them when cut.  From the outside, the pieces resembled shale, but the
interior was unoxidized iron or it had a "core" area with shiny metal
in it.
So, given such a specimen, is it still considered "shale" or "oxide"
if there is unoxidized metal inside it?  What litmus test is used to
determine this?  If the metal can be etched, is it considered "iron"
and not "shale"?  If so, a way to solve the mystery is to etch the
shiny portion and see if it yields a widmanstatten pattern. Best regards, MikeG -- 
-------------------------------------------------------------
Web - http://www.galactic-stone.com/ Facebook - http://www.facebook.com/galacticstone Twitter - http://twitter.com/galacticstone Pinterest - http://pinterest.com/galacticstone ------------------------------------------------------------- On 1/21/14, Anne Black <impact... at aol.com> wrote:
> Very interesting Don, and thank you for posting this response from
> Zsolt.
>
> I will have to disagree with him on one thing, he wrote:   "When I have
> bought this piece from Anne Black she didnt mentioned me that it is
> shale."  That is not correct, it is clearly listed as "Shale" on my
> website, on the Old Collection page (
> http://www.impactika.com/OldIRON.htm ), in fact it is still there, here
> is a copy of that listing:
>
> Hoba Namibia 1920 Ataxite C. Anger Slice-Shale 65.389 76 x 33 x 13
> $995.00
>
> I would guess that Zsolt, being very new at this, did not notice or did
> not know the difference.
>
>
> Anne M. Black
> http://www.impactika.com/
> impact... at aol.com
>
>
> -----Original Message-----
> From: Don Merchant <dmerc... at rochester.rr.com>
> To: Zsolt Kereszty <c... at t-online.hu>; Meteorite-list
> <Meteorite-list at meteoritecentral.com>
> Cc: Don Merchant <dmerc... at rochester.rr.com>
> Sent: Tue, Jan 21, 2014 7:25 pm
> Subject: Re: [meteorite-list] Hoba shale or not shale?                        
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