Richterite Oberti R, Vannucci R, Zanetti A, Tiepolo M, Brumm R C American Mineralogist 85 (2000) 407-419 A Crystal Chemical re-evaluation of amphibole/melt and amphibole/clinopyroxene DTi values in petrogenetic studies SAMPLE 25 _database_code_amcsd 0002375 9.987 18.061 5.298 90 104.81 90 C2/m atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) O1 .11065 .08676 .22057 .0015 .0005 .0058 -.0001 .0007 .0000 O2 .11739 .16911 .72330 .0020 .0007 .0075 -.0001 .0012 -.0001 O3 .10555 0 .71168 .50 .0021 .0012 .0076 0 .0008 0 F3 .10555 0 .71168 .02 .0021 .0012 .0076 0 .0008 0 OH3 .10555 0 .71168 .48 .0021 .0012 .0076 0 .0008 0 O4 .36046 .24851 .79930 .0038 .0008 .0094 -.0007 .0009 -.0004 O5 .34411 .12955 .09409 .0022 .0009 .0102 .0001 .0015 .0010 O6 .34210 .11844 .59172 .0022 .0010 .0079 .0001 .0004 -.0010 O7 .33343 0 .30618 .0022 .0004 .0128 0 .0015 0 SiT1 .27727 .08507 .30115 .94 .0014 .0004 .0055 -.0001 .0007 -.0001 AlT1 .27727 .08507 .30115 .03 .0014 .0004 .0055 -.0001 .0007 -.0001 TiT1 .27727 .08507 .30115 .03 .0014 .0004 .0055 -.0001 .0007 -.0001 SiT2 .28525 .17158 .80554 .94 .0014 .0005 .0055 -.0002 .0005 .0001 AlT2 .28525 .17158 .80554 .03 .0014 .0005 .0055 -.0002 .0005 .0001 TiT2 .28525 .17158 .80554 .03 .0014 .0005 .0055 -.0002 .0005 .0001 FeM1 0 .08334 .5 .12 .0019 .0015 .0052 0 .0012 0 TiM1 0 .08334 .5 .13 .0019 .0015 .0052 0 .0012 0 MgM1 0 .08334 .5 .75 .0019 .0015 .0052 0 .0012 0 FeM2 0 .17966 0 .12 .0019 .0006 .0075 0 .0010 0 TiM2 0 .17966 0 .13 .0019 .0006 .0075 0 .0010 0 MgM2 0 .17966 0 .75 .0019 .0006 .0075 0 .0010 0 FeM3 0 0 0 .12 .0020 .0004 .0050 0 .0005 0 TiM3 0 0 0 .13 .0020 .0004 .0050 0 .0005 0 MgM3 0 0 0 .75 .0020 .0004 .0050 0 .0005 0 CaM4 0 .27673 .5 .47 .0035 .0007 .0129 0 .0041 0 NaM4 0 .27673 .5 .53 .0035 .0007 .0129 0 .0041 0 NaA 0 .5 0 .03 .0056 .0014 .0272 0 .0094 0 KA 0 .5 0 .44 .0056 .0014 .0272 0 .0094 0 NaAM .03707 .5 .07636 .03 .0061 .0012 .0209 0 .0083 0 KAM .03707 .5 .07636 .44 .0061 .0012 .0209 0 .0083 0