Quintinite
Arakcheeva A V, Pushcharovsky D Y, Rastsvetaeva R K, Atencio D, Lubman G U
Crystallography Reports 41 (1996) 972-981
Crystal structure and comparative crystal chemistry of Al2Mg4(OH)12(CO3)*3H2O,
a new mineral from the hydrotalcite-manasseite group
Note polytype 2H
Locality: synthetic
_database_code_amcsd 0012351
5.283 5.283 15.150 90 90 120 P-62m
atom    x    y    z occ Biso
Mg    1/3  2/3 .243      1.8
Al      0    0 .259      2.6
O1      0 .651 .325      2.9
C       0    0 .021  .5  6.3
O2   .318    0 .190      2.7
O3   .244    0    0      4.3
Wat  .598    0   .5      6.5
H1    .35  .35 .398      3.0
H2      0  .36 .125      3.0