5 replies to this topic

[molniyabeer]

While I was shooting some of my other samples today, I decided to see what this sample of the Brahin pallasite would look like with naturel sunlight to backlight it. WOW!! Gotta love olivine! Sample here is about 2-2.5" across.

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[Glassthrower]

Wow. Nice shot! Yup, a beautiful pallasite is hard to beat.

How thick is that specimen in mm?

[molniyabeer]

It's about 2.5 mm or so.

[Jamie76]

Be careful with that Brahin. I've had a few pieces that have fallen apart into a pile of rust. Brahin is either very stable or very unstable. I think my favorite pallasite is Albin. Very beautiful.

[Glassthrower]

Yeah, Brahin has a mixed rep. Very few pallasites are consistently and entirely stable. Imilac, Esquel and Seymchan are generally considered the most stable.

Brahin, Pallasovka, Brenham, Fukang, Glorieta, and Quijingue have mixed reputations depending on who you talk to.

Proper preparation of the specimen is key to preventing a runaway rust reaction. Using alcohol and heat to drive out moisture and then using a properly-applied coating of lacquer will stabilize most specimens.

Edit : I forgot to mention earlier - I'm not very familiar with Albin. There's never much chatter about it for some reason.

[molniyabeer]

Thanks, all, for the cautions on the Brahin. I'll have to watch it closely.