RE: Obtaining a silicon standard wafer

2015-07-13 Thread Cline, James Dr.
Lindsay, I've seen pressed discs of silicon powder that were supplied with older Philips diffractometers, and I understand that PANalytical will presently supply them with their new machines. NIST offers no such standard of silicon in a disc format. But I can suggest that you consider SRM 640

Re: a natural sample

2015-07-13 Thread Natale Perchiazzi
Dear Lubo and All,Did you consider asking in the mailing list of the mindat.org site? From my experience, this site is quite reliable and a valid source of infos and mineral samples, both for Rietveld experiments and not..best regards        Natale Perchiazzi Il Lunedì 13 Luglio 2015 9:1

a natural sample

2015-07-13 Thread Lubomir Smrcok
Hello everybody, May I ask mineralogist & geologists reading this mails (especially European) if anybody could help us in obtaining of an amount of well-ordered mineral, montmorillonite, nick-named "Mikhlailov" from Bulgaria ? My apologies for posting it here, by all my attempts to make a con