[meteorite-list] Some help with [Brenham] inclusions

[Martin Altmann]

Hi all,

I haven't a picture at hand,
but as far as I know, the Reichenbach lamellae appear inside of the troilite
inclusions.
I had once a Mundrabilla with a typical troilite eye, which displayed those
lamellae.
The troilite looked barred or intersected by parallel lines. The bars were a
little less than 1mm wide.

Or to express it else:   A striped troilite drop.

Best!
Martin

-----Ursprüngliche Nachricht-----
Von: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] Im Auftrag von
bernd.pauli at paulinet.de
Gesendet: Mittwoch, 22. August 2007 16:30
An: meteorite-list at meteoritecentral.com
Betreff: Re: [meteorite-list] Some help with [Brenham] inclusions

Hello Mike M., Herman and List,

Herman kindly wrote: "I believe the long schreibersite inclusions
are called 'richenbach lamellae', please correct me if I am wrong."

I don't think we are looking at so-called "Reichenbach Lamellae"
(= chromite laths surrounded by troilite / chromite = FeCr2O4).
Wouldn't Reichenbach Lamellae be much thinner and (almost)
straight, ... needle-like?

But maybe it's Reichenbach Lamellae and schreibersite simultaneously.
This has been observed in the Sychevka IIIAB iron, where troilite is
intergrown with schreibersite and chromite within the Reichenbach
lamellae of that iron.

Best regards,

Bernd




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