I was afraid of that. Unfortunately, my sample is a powder containing about 3 or 4 different alkali phosphates, so a little tricky.
On Tue, 24 Dec 2024, 15:51 Alan W Hewat, <alan.he...@neutronoptics.com> wrote: > Current (2023) knowledge, including main x-ray lines, is summarised on > https://www.mindat.org/min-2712.html > which also links to the extensive American Mineralogy database (which does > not include Millisite). If you have a clean sample, you may need neutrons > to distinguish it from similar hydrated minerals, but it's not obvious that > it's interesting enough :-) > Alan > ________________________________ > Dr Alan Hewat, NeutronOptics > Grenoble, FRANCE (from phone) > alan.he...@neutronoptics.com > +33.476984168 VAT:FR79499450856 > http://NeutronOptics.com/hewat > _______________________________ > > > On Tue, 24 Dec 2024, 04:49 Matthew Rowles, <rowle...@gmail.com> wrote: > >> Hi all >> >> Does anyone know of a published crystal structure for millisite? >> >> It is nominally (Na,K)CaAl6(PO4)4(OH)9·3H2O >> Tetragonal, a=7, c=19.07 Å >> See http://www.minsocam.org/ammin/AM45/AM45_547.pdf >> >> >> or maybe anything possibly isostructural/morphous? It's pretty close to >> wardite, but has an extra hydroxide and water. >> >> ICDD PDF4+ has nothing, Various searches on COD haven't revealed >> anything. I don't have access to ICSD. >> >> Thanks >> >> >> Matthew Rowles >> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> Please do NOT attach files to the whole list <alan.he...@neutronoptics.com >> > >> Send commands to <lists...@ill.fr> eg: HELP as the subject with no body >> text >> The Rietveld_L list archive is on >> http://www.mail-archive.com/rietveld_l@ill.fr/ >> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> >>
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