Arfvedsonite Hawthorne F C The Canadian Mineralogist 14 (1976) 346-356 The crystal chemistry of the amphiboles: V. The structure and chemistry of arfvedsonite _database_code_amcsd 0005126 10.007 18.077 5.332 90 104.101 90 C2/m atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) SiT1 .2738 .08618 .2917 .96 .00145 .00035 .00374 -.00003 .00079 .00013 AlT1 .2738 .08618 .2917 .04 .00145 .00035 .00374 -.00003 .00079 .00013 SiT2 .2864 .17104 .8018 .00162 .00036 .00367 -.00010 .00079 .00000 FeM1 0 .09205 .5 .00210 .00052 .00508 0 .00128 0 FeM2 0 .18443 0 .880 .00188 .00042 .00546 0 .00088 0 AlM2 0 .18443 0 .073 .00188 .00042 .00546 0 .00088 0 TiM2 0 .18443 0 .047 .00188 .00042 .00546 0 .00088 0 FeM3 0 0 0 .76 .00231 .00042 .00501 0 .00087 0 MnM3 0 0 0 .13 .00231 .00042 .00501 0 .00087 0 MgM3 0 0 0 .11 .00231 .00042 .00501 0 .00087 0 NaM4 0 .2779 .5 .921 .00382 .00086 .01267 0 .00411 0 CaM4 0 .2779 .5 .079 .00382 .00086 .01267 0 .00411 0 NaAm .0172 .5 .0402 .293 1.28 KAm .0172 .5 .0402 .707 1.28 O1 .1096 .0914 .2082 .00146 .00073 .00611 .00002 .00083 -.00011 O2 .1201 .1731 .7332 .00254 .00063 .00829 .00008 .00101 .00027 OH3 .1074 0 .7067 .00202 .00063 .00585 0 .00079 0 O4 .3643 .2473 .7984 .00338 .00058 .00747 -.00045 .00223 -.00016 O5 .3440 .1273 .0827 .00207 .00070 .00610 -.00003 .00208 .00077 O6 .3363 .1172 .5841 .00293 .00065 .00467 .00003 .00096 -.00078 O7 .3262 0 .2988 .00311 .00033 .01241 0 .00227 0