NaNa2Mg5Si8O21(OH)3 Camara F, Oberti R, Della Ventura G, Welch M D, Maresch W V American Mineralogist 89 (2004) 1464-1473 The crystal structure of synthetic NaNa2Mg5Si8O21(OH)3, a triclinic C-1 amphibole with a triple-cell and H excess Note: occupancies unreported, so calculated formula has an extra OH _database_code_amcsd 0003648 9.883 54.082 5.277 90.045 103.068 89.960 C-1 atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) NaM4 .0263 .09136 .5241 .0402 .0462 .0400 .0403 -.0094 .0220 -.0150 NaM41 .4663 .25874 .4552 .0176 .0170 .0198 .0125 .0007 -.0039 .0010 NaM42 .4738 .07400 .4547 .0412 .0787 .0265 .0288 .0169 .0338 .0123 NaA 1/2 0 0 .0869 .0510 .1497 .0712 .0226 .0376 -.0094 NaA1 .0214 .16632 1.0347 .0613 .0293 .1061 .0547 -.0126 .0224 .0017 MgM1 .0069 .02984 .5070 .0181 .0142 .0160 .0204 -.0001 -.0037 .0003 MgM2 .0121 .06009 .0054 .0178 .0157 .0136 .0234 .0041 .0030 .0024 MgM3 0 0 0 .0136 .0150 .0139 .0067 .0078 -.0083 .0004 MgM11 .5014 .19646 .4748 .0101 .0139 .0119 .0024 .0037 -.0027 -.0012 MgM12 .5082 .13723 .4792 .0115 .0150 .0128 .0070 -.0002 .0031 .0001 MgM21 .4926 .22672 -.0320 .0113 .0111 .0158 .0044 -.0027 -.0039 .0036 MgM22 .5028 .10656 -.0313 .0157 .0172 .0163 .0154 -.0015 .0080 -.0035 MgM31 -.4945 .16667 -.0216 .0090 .0118 .0111 .0029 -.0044 -.0007 .0007 SiT1A -.2743 .02996 .7205 .0138 .0113 .0103 .0158 -.0027 -.0057 .0059 SiT2A .7262 .05735 .2168 .0141 .0117 .0128 .0158 -.0038 -.0009 -.0004 SiT1B .2840 .02651 .2948 .0124 .0091 .0091 .0144 .0013 -.0070 -.0009 SiT2B .2984 .05545 .8031 .0125 .0088 .0106 .0145 -.0028 -.0052 -.0018 SiT1A1 .2237 .19411 .6891 .0103 .0154 .0091 .0045 .0025 -.0018 -.0044 SiT2A1 .2123 .22275 .1829 .0114 .0167 .0099 .0038 .0031 -.0059 -.0023 SiT1A2 -.2143 .13924 .2663 .0104 .0110 .0165 .0037 -.0012 .0015 .0054 SiT2A2 -.2025 .11051 .7792 .0123 .0155 .0127 .0079 .0018 .0011 .0047 SiT1B1 .7816 .19566 .2634 .0098 .0148 .0127 .0014 .0009 .0007 .0024 SiT2B1 .7146 .27655 .2307 .0153 .0286 .0083 .0082 -.0006 .0027 .0000 SiT1B2 .2290 .13774 .6939 .0106 .0082 .0132 .0095 .0015 .0003 -.0023 SiT2B2 .2236 .10980 .1892 .0103 .0083 .0156 .0082 -.0039 .0046 -.0011 O1A -.1090 .02960 .7872 .0201 O1B .1181 .02805 .2164 .0121 O1A1 .3905 .19478 .7611 .0126 O1A2 -.3788 .13801 .1910 .0095 O1B1 .6155 .19553 .1905 .0124 O1B2 .3936 .13737 .7613 .0125 O2A -.1080 .05698 .2829 .0179 O2B .1305 .05525 .7345 .0163 O2A1 .3795 .22200 .2510 .0111 O2A2 .6300 .10991 .6982 .0206 O2B1 .6184 .22413 .6972 .0139 O2B2 .3905 .11108 .2544 .0101 O3 .8951 .00054 .2896 .0169 O31 .4012 .16650 .2711 .0138 O32 .6131 .16695 .6867 .0149 O4A .6528 .08412 .2152 .0114 O4B .3777 .08035 .8034 .0164 O4A1 .3607 .25233 -.2083 .0237 O4A2 -.1258 .08489 -.2022 .0209 O4B1 .6389 .24954 .2020 .0222 O4B2 .1533 .08374 .2094 .0155 O5A .6617 .04459 .9383 .0258 O5B .3562 .04030 .0887 .0247 O5A1 .3458 .29010 .1121 .0081 O5A2 -.1463 .12711 .0404 .0067 O5B1 -.1526 .20763 .0352 .0142 O5B2 .1610 .12182 .8972 .0086 O6A .6649 .04161 .4330 .0236 O6B .3485 .03643 .5894 .0237 O6A1 .1616 .20230 .3912 .0087 O6A2 -.1508 .12565 .5402 .0211 O6B1 .6545 .29069 .4615 .0120 O6B2 .1669 .12881 .3937 .0171 O7 .3388 -.00203 .2863 .0130 O71 .1672 .16558 .7118 .0166 O72 -.1550 .16755 .2891 .0209 H .8088 .00306 .2645 .0000 H1 .3002 .16791 .2525 .0447 H2 .7182 .16750 .7383 .0287 HB1 .700 .243 .380 .5 HA .695 .095 .390 .5 HA2 .815 .075 .610 .5