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Walstromite |
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Dent Glasser L S, Glasser F P |
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American Mineralogist 53 (1968) 9-13 |
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The crystal structure of walstromite |
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_database_code_amcsd 0000165 |
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6.733 9.616 6.723 69.62 102.33 96.90 P-1 |
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atom x y z |
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Ca1 .272 .507 .763 |
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Ca2 .435 .831 .935 |
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Ba .049 .848 .323 |
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Si1 .096 .222 .145 |
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Si2 .235 .484 .284 |
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Si3 .442 .196 .511 |
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O1 .236 .251 -.027 |
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O2 -.098 .114 .102 |
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O3 .042 .366 .212 |
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O4 .366 .556 .089 |
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O5 .125 .580 .389 |
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O6 .352 .365 .494 |
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O7 .613 .238 .368 |
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O8 .517 .084 .765 |
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O9 .238 .130 .389 |
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NaY9(SiO4)6O2 |
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Gunawardane R P, Howie R A, Glasser F P |
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Acta Crystallographica B38 (1982) 1564-1566 |
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Structure of the oxyapatite NaY9(SiO4)6O2 |
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Note: apatite structure |
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_database_code_amcsd 0009765 |
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9.334 9.334 6.759 90 90 120 P6_3/m |
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atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Na2 1/3 2/3 -.0019 .25 .711 .0034 .0034 .0019 .0017 0 0 |
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Y2 1/3 2/3 -.0019 .75 .711 .0034 .0034 .0019 .0017 0 0 |
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Y1 .2375 .0042 .25 .706 .0030 .0034 .0022 .00145 0 0 |
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Si .3723 .3994 .25 .26 |
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O1 .2486 .3389 .4380 1.19 |
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O2 .4868 .3171 .25 .98 |
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O3 .5252 .4013 .75 .83 |
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O4 0 0 .25 1.2 |
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Stetindite |
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Skakle J M S, Dickson C L, Glasser F P |
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Powder Diffraction 15 (2000) 234-238 |
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The crystal structures of CeSiO4 and Ca2Ce8(SiO4)6O2 |
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Locality: synthetic |
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_database_code_amcsd 0015318 |
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6.9564 6.9564 6.1953 90 90 90 *I4_1/amd |
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0 -.25 .125 |
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atom x y z Uiso |
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Ce 0 .75 .125 .0091 |
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Si 0 .75 .625 .017 |
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O 0 .0702 .1989 .012 |
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Ca2Ce8(SiO4)6O2 |
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Skakle J M S, Dickson C L, Glasser F P |
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Powder Diffraction 15 (2000) 234-238 |
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The crystal structures of CeSiO4 and Ca2Ce8(SiO4)6O2 |
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Locality: synthetic |
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_database_code_amcsd 0015319 |
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9.4343 9.4343 6.8885 90 90 120 P6_3/m |
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atom x y z occ Uiso |
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Ca1 1/3 2/3 -.0038 .498 .052 |
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Ce1 1/3 2/3 -.0038 .502 .052 |
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Ce2 .2338 -.0108 .25 .995 .0302 |
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Ca2 .2338 -.0108 .25 .005 .0302 |
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Si1 .403 .380 .25 .082 |
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O1 .316 .467 .25 .046 |
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O2 .597 .467 .25 .070 |
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O3 .340 .252 .071 .083 |
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O4 0 0 .25 .087 |
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