Here are some last-minute results (and attached zip file) from:


Software used: Bruker Eva version 7.0 with PDF Release 1999 database.
Various search strategies tried, e.g. restricting pattern types to experimental,
using full pattern or peak positions, using only mineral database,
inorganics or full database, etc.


Summary of results:


Sample 1
Some possible candidates:
76-558         Fluoroapatite       Ca5(PO4)3F
76-228         Berlinite      AlPO4
29-696         Sidenite       FeCO3
44-1415        Lepidocrocite       FeO(OH)
33-863         Souzalite      (Mg,Fe)3(Al,Fe)4(PO4)4(OH)6·2H2O


Sample 2
No convincing fits obtained, but a few candidates to consider:
81-1573   Lithium Aluminum Hydroxide Hydrate  LiAl2(OH)7(H2O)2
76-1608   Thallium Gallium Fluoride           TlGaF6
83-1769   Rubidium Mercury Cyanide       Rb2Hg(CN)4
34-1440   Calcium Niobium Fluoride       CaNbF7


Sample 3
No experience with pharmaceuticals and no immediate convincing answers


Sample 4
23-0333   Lead Oxide Sulfate       Pb5O4SO4/PbSO4·4PbO
29-0781   Lead Oxide Sulfate Hydrate     Pb4O3SO4·H2O
78-1666   Lead Oxide               PbO