Software information - Software for X-ray diffraction PHILIPS. X'PERT graphics and Identify. Data base - ICDD 2000. Sample 1. About sample 1, the geologist said: please, can you identify the phases in that powder? Probably this is not single phase. Bragg-Brentano geometry - Cu-Kalpha. First matches with restrictions to Ca, Fe, Al, P, Si, O, C and H were: 86-0740 Ca(PO4)3(OH) 83-0462 Ca2(SiO4) 83-0463 Ca2(SiO4) 76-0271 H3PO3 86-0398 Ca2(SiO4) 83-0464 Ca2(SiO4) ... My guess...: It can be 86-0740 Ca(PO4)3(OH) plus calcium silicate plus 76-0271 H3PO3 plus 83-0460 Ca2(SiO4) plus 74-1733 Ca2FeAl2Si3O12(OH) plus 72-1441 AlSiO5 plus 81-1592 Si5(PO4)6O plus 88-0436 Ag2(VP2O8). I think I was not far in the first round when I thought it would be a phosphate and/or a silicate… As I'm not a geologist and as I've never studied geology I went to the internet to see Rapid Creek, Yukon, Canada and I've found: http://mineral.galleries.com/minerals/fablocal/fablocal.htm SIDERITE AND LAZULITE FROM RAPID CREEK, YUKON TERRITORY, CANADA So I'm missing carbon! But siderite is FeCO3, Iron Carbonate! THE MINERAL SIDERITE · Chemistry: FeCO3, Iron Carbonate. · Class: Carbonate. · Group: Calcite. · Uses: A minor ore of iron and as mineral specimens. · Specimens As a conclusion, what I would do know was to try to find FeCO3 in the database and compare it with the sample. I would also see if my choices were already found in Rapid Creek or if these minerals chosen can be found near each other. Another work to be done would be to compare all the minerals that can normally be found in Rapid Creek with the sample. Sample 2. About sample 2, the chemist said: please, can you tell me if this powder from my last synthesis contains phases listed in the PDF? In fact, it could be single phase. Transmission geometry - Capillary - Cu-Kalpha-1. It is not easy at all this sample! First matches, with organic restriction, were: 26-1993 C8H20NF6U 37-1550 C4H12Cl3CrN 48-0475 C14H24F2N2O40Si20 ... My guess...: I think the sample has 48-0475 C14H24F2N2O40Si20 (but something should be wrong especially for high angles. Maybe the database is not very accurate for this compound?) plus 45-1374 SiO2? (Was he working at high pressures?) plus SiF4? Could this chemist be Dr. C. Jones or Dr. JS Foord??? Dr C. Jones - Publications - [ Traduzir esta página ] ... N'-Tetramethylethylenediamine) and Thermally Robust [GaH 3 (quinuclidine ... PC Junk, JL Roberts, Phosphorus, Sulfur and Silicon ... of Complexes of Trepyridine N-Oxide www.cf.ac.uk/chemy/staff/jones/fullpub.html - 38k - Em cache - Páginas Semelhantes JS Foord - Publications to Date - [ Traduzir esta página ] ... by metalorganic molecular beam epitaxy using gallane-quinuclidine ... oxygen on chromium and chromium(III) oxide. ... deposition of patterned tungsten films on silicon ... physchem.ox.ac.uk/~jsf/papers/publications_list.html - 76k Sample 3. About sample 3, the pharmaceutical engineer said: please, would you be able to identify the phases in that powder from a search in the PDF? Bragg-Brentano geometry - Cu-Kalpha - Sample dusted through a sieve for avoiding preferred orientation. First matches, with the restriction to C, H, N, O were: 19-1946 C13H10N2O (in fact C13H10N2O4) 21-1629 C19H18O8 38-1556 C6H9N3O3 22-1712 C14H12N2O2 45-1998 Hydralazine C8H8N4 31-1530 C3H6N4O3!H2O My guess...: In fact the first match is 19-1946 C13H10N2O (in fact C13H10N2O4) - Thalidomide. It is the only polymorph I could find. I knew the tragic effects of thalidomide on pregnant women, but I've found that: Determining the crystal structure and its possible polymorphs is a big challenge. ... As a result of the thalidomide tragedy, in 1962 the Food Drug and Cosmetic Act ... Looking further for polymorphs I've also find (for SiO2): http://www.uwgb.edu/dutchs/PETROLGY/Silica%20Poly.HTM Which is important for these kinds of challenges (for instance to ask other things about sample 2!!! Sample 4. About sample 4, the laboratory director said: I have received an industrial processing plant sample, please could you realize a powder pattern and then a search-match on it? Bragg-Brentano geometry - Cu-Kalpha. First matches were from 1st round: 80-1934 Ca2Ho(RuO6) 50-1779 Nd2Y2O3F6 23-0333 Pb5O4SO4 84-1029 TaNi3S8 84-1022 Cs3Cr2Br9 35-1482 PbO My guess...: So my last guess was right. It is a battery plant!!! "My internet research revealed that it could be battery waste: http://www.unep.or.jp/ietc/Publications/Integrative/EnTA/AEET/Final_Report/3.asp "…The typical lead battery consists of 17% metallic lead, 50% lead oxide/sulfate, 24% electrolyte, 5% plastics and 4% (and reducing) inert residuals." First matches, with restrictions to Pb, S, O, C, and H, were: 23-0333 Pb5O4SO4 35-1482 PbO 87-0604 PbO 88-0552 (PbO)3(Pb(SO4))(H2O) 76-1791 Pb2O3 85-0799 S8 My guess...: Is that the sample has 23-0333 Pb5O4SO4 plus 35-1482 PbO (or 87-0604 PbO) plus 88-0552 (PbO)3(Pb(SO4))(H2O). I couldn't find traces of C.