[meteorite-list] What is It?

From: Norm Lehrman <nlehrman_at_meteoritecentral.com>
Date: Wed Jun 15 23:01:30 2005
Message-ID: <20050616030128.18695.qmail_at_web81004.mail.yahoo.com>

Slow down Dave,

I didn't say it is a winner; I just don't know what
it is. I can't seem to get the picture back up (I
think the auction has been cancelled), but it looked
to me like all the phases were very coarsely
crystalline. In this case, metal or no metal, it
couldn't be a basalt (which is by definition aphanitic
except for possible phenocrysts).

With slower crystallization, you can get gabbros and
other coarsely crystalline ultramafics with segregated
sulfides, but once again, the rapid crystallization
leading to basalt formation has little chance to
segregate anything beyond micro-blebs of sulfide.

I can't believe it could be a basalt.

Norm
(http://tektitesource.com)
--- Dave Freeman mjwy <dfreeman_at_fascination.com>
wrote:

> Geeze Norm, I better buy it! I see 420 others have
> seen the auction and
> no one has bid yet.
>
> I have seen olivine basalt's with free iron
> flakes ..... and larger
> courtesy: Wind River glacial till, and yes they do
> look like meteorites
> but one highly respected meteorite person noted mine
> was not meteorite
> but an interesting wrong! Won't discuss my career
> here but I have 15
> years of Rocky Mountain geology experience in the
> field.....long before
> I discovered meteorites were cool.
> Look closely at the pictures, these are flakes and
> may not even be
> iron, or even metal for that matter. Olivine flakes
> will lay like that
> sometimes even, comes from very slow igneous
> cooling. This rock could
> even be metamorphic in origin for all we know.
> . Back about 1999 one of my iron specked olivine
> basalt's went to Bob
> Haag and from him, bypassed his discard pile and was
> sent over to ASU
> for a second look before determination of a very
> rich iron-olivine basalt.
> Tell me that if this was really a meteorite that the
> seller with a feed
> back of 75% and only sold three Canyon Diablo' s is
> a meteorite expert.
> I go with a real meteorite and a real person going
> to a real meteorite
> dealer and phony going with phony and going to
> eBay.....
> Doh,
> Dave pebble-pup.
>
>
> Norm Lehrman wrote:
>
> >Dave,
> >
> >In a career working frequently with basalts, I've
> >never seen megascopic free metal. I also have
> never
> >heard of the same. Basalts are, by nature, iron
> rich,
> >but for all practical purposes, most of the iron is
> >present in silicate phases. This thing isn't a
> >basalt. I don't have any better ideas. I think it
> >might be what the seller claims it to be----
> >
> >Norm
> >(http://tektitesource.com)
> >
> >--- Dave Freeman mjwy <dfreeman_at_fascination.com>
> >wrote:
> >
> >
> >
> >>I believe that a week ago we determined this to be
> a
> >>crackpot. Iron rich
> >>olivine basalt is my blind guess at what it may
> be.
> >>I have some somewhere.
> >>DF
> >>
> >>thetoprok_at_aol.com wrote:
> >>
> >>
> >>
> >>>Hello List,
> >>>
> >>>Anyone checked this out in person? Any idea what
> >>>
> >>>
> >>it is?
> >>
> >>
> >>>
> >>>
> >>>
>
>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=3239&item=6538683982&rd=1
> >
> >
> >>>-Larry
> >>>______________________________________________
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> >>>
> >>>
> >>>
>
>http://six.pairlist.net/mailman/listinfo/meteorite-list
> >
> >
> >>>
> >>>
> >>______________________________________________
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> >>
> >>
> >>
>
>http://six.pairlist.net/mailman/listinfo/meteorite-list
> >
> >
> >
> >
> >
> >
>
>
Received on Wed 15 Jun 2005 11:01:28 PM PDT