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) [email protected] +33.476984168 VAT:FR79499450856 http://NeutronOptics.com/hewat _______________________________
On Tue, 24 Dec 2024, 04:49 Matthew Rowles, <[email protected]> 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 <[email protected] > > > Send commands to <[email protected]> eg: HELP as the subject with no body > text > The Rietveld_L list archive is on > http://www.mail-archive.com/[email protected]/ > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > >
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