P&H REE oxide set

[BenjaminWade]

Hi all
I was hoping someone could help me identify a REE oxide mount I found tucked away that I have somehow missed over the years. It is labelled "P&H REE2O" and has six glasses mounted on it. As far as I can determine from EDS, their element content is as follows:

1) Pure Si-Al-Ca glass - no REE
2) Si-Al-Ca glass +Nd-Tb-Lu
3) Si-Al-Ca glass +La-Sm-Ho-Yb
4) Si-Al-Ca glass +Ce-Eu-Ho-Tm
5) Si-Al-Ca glass +Pr-Dy-Er
6) Another Pure Si-Al-Ca glass - no REE? Not sure why there would be two blanks on this mount though, perhaps just low level and not detectable by EDS?

I have the other P&H single element Ca-Si-Al REE standards, but nowhere can I find any information on these multi-element P&H REE xtals. Is anyone able to shed any light on these, were they distributed or custom made, is there any certified numbers for them?

Cheers

[Karsten Goemann]

Hi Ben, they're definitely glasses not crystals, see here: http://www.pandhdevelopments.com/reeg6.html

There are 4 with 3-4 REE each in supposedly interference free combinations at around 4wt% each, one is a blank, and one has all REEs at around 0.5wt% each.

We had this mount in Clausthal in Germany where I did my PhD. I could ask them to send copies of the P&H analysis certificates. Or have a look through my old files if I've got a copy myself.

Cheers, Karsten

[BenjaminWade]

Holy crap Karsten, I must be losing it. I swear I searched the P&H website and could only find those single element glasses. I think I need to go the way of Old Yeller.

That would be awesome if you could find the data for it. I probably wont use it often but would be good to enter into the database. Thanks again.

Cheers

[UoL EPMA LAB]

Hi Ben

I use those stds, I have the analyses (by AA I think) - I can send them to you.

All the best

Richard