[meteorite-list] triolite inclusions

[Norman Lehrman]

Karin, Tom, Steve & list--

Norton doesn't answer the Troilite question anywhere
that I can see.  He simply provides descriptive
comments.  I don't have the answer, but I've wondered
about the same question: why does troilite commonly
assume the form of rounded blobs?

A speculation based on my exposure to terrestrial
materials is that it may involve immiscibility in the
original melt, analogous to oil in water.  We
sometimes see rounded inclusions of sulfide minerals
in silicate melts.  In igneous materials, rounded
phase boundaries typically mean that the shape was
generated by surface tension, which would only be
influential in the molten state.  I don't know that
sulfides are immiscible in Fe-Ni melts, but that's
what it looks like.

I'm sure someone out there has the real answers rather
than speculations, but I thought I'd throw these ideas
out to keep the ball rolling---

Happy new orbit to all!
Norm
(http://TektiteSource.com)

--- Tom AKA James Knudson
<peregrineflier at npgcable.com> wrote:

> Steve might be like me, poor guy! Even as great as
> rocks from space is, it
> goes right over my head! I've read the thing over
> and over, and I still
> don't get it all. I do so much better if I here it
> from someone on the list,
> explained in plain old English with out the tech
> stuff.
> 
> Thanks, Tom
> peregrineflier <><
> IMCA 6168
>
http://www.frontiernet.net/~peregrineflier/Peregrineflier.htm
> ----- Original Message -----
> From: "Karin Hughes" <x377835 at hotmail.com>
> To: <meteorite-list at meteoritecentral.com>
> Sent: Monday, January 03, 2005 9:04 AM
> Subject: RE: [meteorite-list] triolite inclusions
> 
> 
> > Steve.........
> >
> > Do you own the book "Rocks from Space" by O.
> Richard Norton?   If not, why
> > not?
> >
> > As someone who only recently became interested in
> meteorites, I have found
> > this book contains a wealth of knowledge.  You may
> want to take a look at
> > someone's copy.
> >
> > Karin
> >
> >
> > >From: "Steve Arnold, Chicago!!!"
> <steve_arnol60120 at yahoo.com>
> > >To: meteorite-list at meteoritecentral.com
> > >Subject: [meteorite-list] triolite inclusions
> > >Date: Mon, 3 Jan 2005 07:26:27 -0800 (PST)
> > >
> > >Hello and good morning list.I need a question
> answerd.One thing I am
> going
> > >to do this year, is make a habit to get to know a
> little more about the
> > >scientific end of our great hobby.I need to know
> what causes triolite
> > >inclusions into iron meteorites?What causes the
> triolte to get into the
> > >veins to make those great looking blobs to
> occur.Email at your
> convience.I
> > >am off all day.
> > >
> > >
> > >                                    steve arnold,
> chicago, usa!!
> > >
> > >=====
> > >Steve R.Arnold, Chicago, IL, 60120
> > >I. M. C. A. MEMBER #6728
> > >Illinois Meteorites
> > >website url http://stormbringer60120.tripod.com
> >
> >http://members.ebay.com/aboutme/illinoismeteorites/
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >__________________________________
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