Arfvedsonite Hawthorne F C, Ungaretti L, Oberti R, Bottazzi P, Czamanske G K American Mineralogist 78 (1993) 733-745 Li: an important component in igneous alkali amphiboles Sample: A(13) _database_code_amcsd 0001598 9.986 18.042 5.314 90 103.92 90 C2/m atom x y z occ Biso O1 .1101 .0913 .2077 .78 O2 .1202 .1726 .7332 .84 O3 .1082 0 .7081 .85 .99 F .1082 0 .7081 .15 .99 O4 .3640 .2475 .7992 1.02 O5 .3449 .1268 .0804 .86 O6 .3376 .1183 .5814 .92 O7 .3276 0 .2972 1.03 SiT1 .2750 .0860 .2909 .991 .55 AlT1 .2750 .0860 .2909 .009 .55 SiT2 .2867 .1708 .7998 .991 .55 AlT2 .2867 .1708 .7998 .009 .55 MgM1 0 .0909 .5 .020 .73 Fe2+M1 0 .0909 .5 .980 .73 Fe2+M2 0 .1839 0 .340 .59 Fe3+M2 0 .1839 0 .600 .59 TiM2 0 .1839 0 .030 .59 ZnM2 0 .1839 0 .010 .59 AlM2 0 .1839 0 .020 .59 LiM3 0 0 0 .220 .68 Fe2+M3 0 0 0 .640 .68 MnM3 0 0 0 .140 .68 NaM4 0 .2778 .5 .975 1.36 CaM4 0 .2778 .5 .025 1.36 KA 0 .5 0 .377 3.19 NaA 0 .5 0 .203 3.19 KAm .0386 .5 .0937 .059 3.24 NaAm .0386 .5 .0937 .032 3.24 KA2 0 .4700 0 .013 3.00 NaA2 0 .4700 0 .007 3.00 H .1870 0 .7480 .85 .82