Oxo-magnesio-hastingsite
Zaitsev A N, Avdontseva E Y, Britvin S N, Demeny A, Homonnay Z, Jeffries T E,
Keller J, Krivovichev V G, Markl G, Platonova N V, Siidra O I, Spratt J, Vennemann T
Mineralogical Magazine 77 (2013) 2773-2792
Oxo-magnesio-hastingsite, NaCa2(Mg2Fe3+3)(Al2Si6)O22O2, a new anhydrous amphibole
from the Deeti volcanic cone, Gregory rift, northern Tanzania
Locality: the Deeti volcanic cone, Gregory rift, northern Tanzania
_database_code_amcsd 0019979
9.8837 18.0662 5.3107 90 105.278 90 C2/m
atom        x      y      z  occ   Uiso U(1,1) U(2,2) U(3,3)  U(1,2) U(1,3)  U(2,3)
NaAm    .0217     .5  .0433 .335  .0198
KAm'    .0587     .5   .114 .165  .0371
MgM1        0 .08344     .5  .61 .01223  .0086  .0209  .0077       0 .00317       0
Ti4+M1      0 .08344     .5  .22 .01223  .0086  .0209  .0077       0 .00317       0
Fe3+M1      0 .08344     .5  .17 .01223  .0086  .0209  .0077       0 .00317       0
MgM2        0 .17717      0  .60 .00715  .0073  .0064  .0078       0 .00213       0
AlM2        0 .17717      0  .06 .00715  .0073  .0064  .0078       0 .00213       0
Fe3+M2      0 .17717      0  .34 .00715  .0073  .0064  .0078       0 .00213       0
MgM3        0      0      0  .67  .0081  .0097  .0056  .0079       0  .0004       0
Fe3+M3      0      0      0  .33  .0081  .0097  .0056  .0079       0  .0004       0
CaM4   .27880     .5 .01131  .92 .01131  .0129 .00996  .0129       0 .00672       0
NaM4   .27880     .5 .01131 .075 .01131  .0129 .00996  .0129       0 .00672       0
Mn2+M4 .27880     .5 .01131 .005 .01131  .0129 .00996  .0129       0 .00672       0
SiT1   .28190 .08529 .30306 .575 .00740 .00744 .00632 .00809 -.00073 .00141 -.00056
AlT1   .28190 .08529 .30306 .425 .00740 .00744 .00632 .00809 -.00073 .00141 -.00056
SiT2   .29017 .17250 .81059 .975 .00724 .00715 .00686 .00760 -.00082 .00176 -.00005
AlT2   .29017 .17250 .81059 .025 .00724 .00715 .00686 .00760 -.00082 .00176 -.00005
O1     .10780 .08700 .21959      .00988  .0093  .0096  .0104  -.0008  .0020  -.0004
O2     .11857 .17148 .72761      .00989  .0082  .0105  .0107  -.0001  .0020   .0003
O3     .10719      0  .7145  .70  .0122  .0106  .0136  .0119       0  .0023       0
OH3    .10719      0  .7145  .30  .0122  .0106  .0136  .0119       0  .0023       0
O4     .36486 .25034  .7899      .01222  .0136  .0097  .0135  -.0028  .0039  -.0004
O5     .34981 .13882 .10795       .0140  .0112  .0169  .0129   .0002  .0014   .0051
O6     .34649 .11779 .60676       .0137  .0121  .0143  .0151   .0001  .0040  -.0042
O7     .34140      0  .2852       .0172  .0125  .0148  .0226       0  .0018       0