[meteorite-list] Question on Toluca Sample that I came acrosson ebay

[Jason Utas]

Hello Mark,
I wouldn't be surprised in the least if the fellow already knew - I've
sent such messages before, only to meet a stone wall of silence, or a
vehement denial of the facts from a mineral dealer who knows less than
they think they do about rocks from space.  That said, it could well
be an honest mistake.  There's no telling.
It's worth a shot I suppose, but if I'm not mistaken, the auction
closes in about a minute, so it's a bit late for that.
Another one bites the dust...
Regards,
Jason

On Tue, Aug 4, 2009 at 6:30 PM, Mark Grossman<markig at westnet.com> wrote:

> Hi Jason,

>

> Thanks for the info.  Looks like you're right.

>

> I checked "Rocks from Space", and color plate IV has a picture of a Toluca

> specimen with a closeup of ferric hydroxide and hydrochloric acid exuding

> from between the Widmanstatten plates.

>

> And it looks like some of those brown "crossed lines" on the ebay sample.

>

> So what should I do - inform the ebay seller that he has a sick patient on

> his hands that he is trying to unload?  :)

>

> Thanks again.

>

> Mark Grossman

>

> ----- Original Message ----- From: "Jason Utas" <meteoritekid at gmail.com>

> To: "Kashuba" <mary.kashuba at verizon.net>; "Meteorite-list"

> <meteorite-list at meteoritecentral.com>

> Sent: Tuesday, August 04, 2009 9:04 PM

> Subject: Re: [meteorite-list] Question on Toluca Sample that I came acrosson

> ebay

>

>

> Hello Mark, All,

> Those squiggly lines are what Nininger coined "lawrencite," a

> corrosive "disease" that occurs primarily in the presence of

> terrestrial salts.  While the term is fairly well-recognized, it

> generally applies to meteorites which experience accelerated oxidation

> even years after having been found, having spent long periods of time

> in unfavorable climates.

> The slice does indeed look like Toluca, and it might be a fine

> specimen if refinished, but good luck with preserving it - maybe Bill

> Mason might have a word on this.

> That said, there are no troilite inclusions visible in the slice.

> Regards,

> Jason

>

> On Tue, Aug 4, 2009 at 2:57 PM, Kashuba<mary.kashuba at verizon.net> wrote:

>>

>> Mark, List,

>>

>> It looks to me like an etched iron meteorite slice that has been clear

>> coated and is rusting. Corrosion will boil up and worm its way around

>> under

>> coatings. Some Toluca have prominent troilite. None is obvious in this

>> slice but it still could very well be a Toluca. Maybe someone read a

>> description somewhere that mentioned troilite, saw the Widmanstätten

>> pattern

>> and figured that is what the "crossed lines" are. You might pick it up

>> cheap, refinish it and pray.

>>

>> Regards,

>>

>> - John

>>

>> John Kashuba

>> Ontario, California

>>

>> -----Original Message-----

>> From: meteorite-list-bounces at meteoritecentral.com

>> [mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Mark

>> Grossman

>> Sent: Tuesday, August 04, 2009 1:37 PM

>> To: meteorite-list at meteoritecentral.com

>> Subject: [meteorite-list] Question on Toluca Sample that I came across on

>> ebay

>>

>> Would be interested on any comments on this Toluca sample that I came

>> across

>>

>> on ebay. According to the seller, the sample was purchased from a

>> collector

>>

>> in Spain named "Ceruda" and the troilite is "the crossed lines on the

>> specimen."

>>

>>

>> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=180387460024&ssPageName=S

>> TRK:MEWAX:IT

>>

>> Thanks.

>>

>> Mark Grossman

>>

>>

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