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Brianite |
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Alkemper J, Fuess H |
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Zeitschrift fur Kristallographie 213 (1998) 282-287 |
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The crystal structures of NaMgPO4, Na2CaMg(PO4)2 and Na18Ca13Mg5(PO4)18: |
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new examples for glaserite related structures |
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Locality: synthetic |
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Note: known as the alpha polymorph of Na2CaMg(PO4)2 |
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_database_code_amcsd 0011078 |
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9.120 5.198 13.370 90 90.78 90 P2_1/c |
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atom x y z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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Nal .5812 .2786 .3986 .016 .013 .012 -.001 -.001 -.002 |
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Na2 .0835 .7774 .4101 .015 .013 .009 .001 -.001 -.002 |
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Cal .2373 .3149 .2494 .024 .010 .007 .001 .000 .000 |
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Mg1 .2526 .2542 .5018 .006 .007 .004 .000 .000 .001 |
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P1 .4137 .7727 .3695 .005 .005 .004 .000 -.001 .000 |
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P2 .9185 .2707 .3654 .006 .005 .003 .000 .000 -.001 |
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O11 .4024 .6723 .2633 .025 .019 .008 .002 -.002 -.007 |
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O12 .9236 .1951 .2558 .027 .015 .004 .003 .000 -.003 |
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O21 .3348 .0341 .3811 .015 .007 .008 .003 .002 .000 |
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O22 .8319 .5215 .3812 .013 .008 .008 .004 .003 .000 |
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O31 .0758 .3052 .4068 .008 .015 .014 -.001 -.005 .004 |
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O32 .5752 .8028 .4014 .008 .015 .015 -.001 -.006 .004 |
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O41 .3410 .5746 .4386 .015 .010 .017 -.003 .004 .006 |
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O42 .8455 .0505 .4242 .014 .009 .013 -.003 .002 .004 |
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