Ferri-ghoseite
Oberti R, Ghose S
European Journal of Mineralogy 5 (1993) 1153-1160
Crystal-chemistry of a complex Mn-bearing alkali amphibole
("tirodite") on the verge of exsolution
_database_code_amcsd 0006506
9.704 17.990 5.297 90 103.51 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)
NaA 0 .5 0 .1 6.29 .0121 .0080 .0550 0 .0234 0
KA 0 .5 0 .01 6.29 .0121 .0080 .0550 0 .0234 0
NaAm .0559 .5 .1201 .1 2.55 .0070 .0020 .0282 0 .0073 0
KAm .0559 .5 .1201 .01 2.55 .0070 .0020 .0282 0 .0073 0
FeM1 0 .0881 .5 .144 .60 .0020 .0005 .0047 0 .0011 0
MgM1 0 .0881 .5 .768 .60 .0020 .0005 .0047 0 .0011 0
LiM1 0 .0881 .5 .012 .60 .0020 .0005 .0047 0 .0011 0
MnM1 0 .0881 .5 .076 .60 .0020 .0005 .0047 0 .0011 0
FeM2 0 .1802 0 .144 .54 .0015 .0005 .0047 0 .0008 0
MgM2 0 .1802 0 .768 .54 .0015 .0005 .0047 0 .0008 0
LiM2 0 .1802 0 .012 .54 .0015 .0005 .0047 0 .0008 0
MnM2 0 .1802 0 .076 .54 .0015 .0005 .0047 0 .0008 0
FeM3 0 0 0 .144 .55 .0021 .0003 .0045 0 .0008 0
MgM3 0 0 0 .768 .55 .0021 .0003 .0045 0 .0008 0
LiM3 0 0 0 .012 .55 .0021 .0003 .0045 0 .0008 0
MnM3 0 0 0 .076 .55 .0021 .0003 .0045 0 .0008 0
CaM4 0 .2717 .5 .097 1.36 .0038 .0013 .0118 0 .0042 0
NaM4 0 .2717 .5 .217 1.36 .0038 .0013 .0118 0 .0042 0
MnM4 0 .2717 .5 .142 1.36 .0038 .0013 .0118 0 .0042 0
MgM4 0 .2717 .5 .042 1.36 .0038 .0013 .0118 0 .0042 0
CaM4' 0 .2598 .5 .097 .72
NaM4' 0 .2598 .5 .217 .72
MnM4' 0 .2598 .5 .142 .72
MgM4' 0 .2598 .5 .042 .72
SiT1 .2833 .0850 .2884 .985 .45 .0013 .0003 .0039 .0000 .0004 .0000
AlT1 .2833 .0850 .2884 .0137 .45 .0013 .0003 .0039 .0000 .0004 .0000
SiT2 .2912 .1707 .7964 .985 .50 .0015 .0004 .0041 -.0001 .0004 .0000
AlT2 .2912 .1707 .7964 .0137 .50 .0015 .0004 .0041 -.0001 .0004 .0000
O1 .1126 .0869 .2131 .058 .0014 .0006 .0050 -.0001 .0006 -.0002
O2 .1197 .1705 .7275 .70 .0020 .0006 .0060 .0000 .0008 -.0001
O3 .1102 0 .7108 .8 .74 .0019 .0006 .0070 0 .0011 0
F .1102 0 .7108 .2 .74 .0019 .0006 .0070 0 .0011 0
O4 .3670 .2489 .7902 .98 .0032 .0006 .0094 -.0005 .0005 .0003
O5 .3497 .1312 .0810 .84 .0019 .0009 .0066 -.0001 .0010 .0010
O6 .3450 .1194 .5769 .89 .0020 .0010 .0062 .0000 .0004 -.0009
O7 .3398 0 .2889 .91 .0024 .0004 .0133 0 .0014 0
H .1936 0 .7526 .8 1.31