Zanazziite
Rastsvetaeva R K, Rozenberg K A, Chukanov N V, Mockel S
Crystallography Reports 54 (2009) 568-571
The crystal structure of an iron-rich variety of zanazziite belonging to
heteropolyhedral framework roscherite-group beryllophosphates
Locality: Sapucaia mine, Minas Gerais, Brazil
_database_code_amcsd 0012416
15.876 11.860 6.607 90 95.490 90 C2/c
atom x y z occ Biso
CaA 0 .2594 .25 1.38
MgA1 0 0 0 .65 .46
FeA1 0 0 0 .35 .46
MgB2 .1714 .1630 .9958 .48 1.25
FeB2 .1714 .1630 .9958 .31 1.25
AlB .1714 .1630 .9958 .13 1.25
MnB .1714 .1630 .9958 .09 1.25
Be .3327 .1774 .3032 1.2
P1 .1877 .1162 .4776 .89
P2 0 .2726 .75 1.01
O1 .3557 .4981 .5003 1.4
O2 .2825 .0996 .4499 1.3
O3 .1445 .1826 .2969 1.2
O4 .3196 .3155 .3247 1.1
O5 .4583 .3002 .0747 1.6
O6 .4343 .1510 .3416 1.4
Oh1 .2998 .1642 .0635 1.3
Wat1 0 .0403 .25 .5 1.6
OH2 0 .0403 .25 .5 1.6
OW2 .0933 .4197 .2196 3.7
H1 .077 .484 .18 3.0
H2 .175 .377 .98 3.0
H3 .124 .421 .32 3.0
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Zanazziite
Fanfani L, Nunzi A, Zananni P F, Zanzari A R
Tschermaks Mineralogische und Petrographische Mitteilungen 22 (1975) 266-277
The crystal structure of roscherite
Locality: Lavra da Ilha, Taquaral, Minas Gerais, Brazil
_database_code_amcsd 0015658
15.874 11.854 6.605 90 95.43 90 C2/c
atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Ca 0 .2599 .25 .00069 .00387 .01037 0 .00145 0
Mg .1714 .1630 -.0043 .7 .00054 .00311 .00802 -.00013 .00075 -.00035
Fe .1714 .1630 -.0043 .3 .00054 .00311 .00802 -.00013 .00075 -.00035
Al 0 0 0 .67 .00064 .00445 .01439 .00200 .00129 -.00402
Be .3322 .1772 .3024 .00061 .00348 .00863 -.00013 .00127 -.00042
P1 .1874 .1166 .4777 .00043 .00272 .00694 -.00011 .00083 -.00019
P2 0 .2727 .75 .00045 .00320 .00699 0 .00051 0
O1 .1431 .0023 .5012 .00143 .00328 .00982 -.00064 .00079 .00002
O2 .2816 .0989 .4508 .00064 .00384 .01033 .00016 .00142 .00600
O3 .1442 .1824 .2973 .00068 .00349 .00882 -.00011 .00038 .00034
O4 .1805 .1849 .6754 .00094 .00335 .00859 .00016 .00087 -.00066
O5 .0410 .2006 .9233 .00124 .00431 .00812 .00072 .00052 .00042
O6 .0661 .3496 .6600 .00059 .00393 .01397 .00006 .00148 .00024
OH7 .2999 .1636 .0644 .00074 .00342 .00780 .00001 .00079 -.00062
OH8 0 .0428 .75 .00071 .00435 .04580 0 -.00003 0
Wat9 .0935 .4205 .2200 .00122 .00373 .01244 .00008 .00089 .00006
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