Sepiolite Giustetto R, Levy D, Wahyudi O, Ricchiardi G, Vitillo J G European Journal of Mineralogy 23 (2011) 449-466 Crystal structure refinement of a sepiolite/indigo Maya Blue pigment using molecular modelling and synchrotron diffraction Locality: Germany _database_code_amcsd 0018363 13.395 27.016 5.2765 90 90 90 Pncn atom x y z occ Uiso Mg1 0 .029 .25 .029 Mg2 0 .084 .75 .029 Mg3 0 .1459 .25 .029 Mg4 0 .204 .75 .029 Si1 .200 .0274 .591 .011 Si2 .211 .1407 .577 .011 Si3 .204 .1948 .062 .011 O1 .076 .030 .602 .014 OH2 .076 .089 .055 .014 O3 .090 .1453 .555 .014 O4 .078 .193 .067 .014 O5 .248 .0026 .333 .014 O6 .244 .0833 .600 .014 O7 .243 .165 .308 .014 O8 .255 .172 .806 .014 O9 .25 .25 .076 .014 Wat10 .106 .2527 .581 .98 .026 Wat11 .563 -.102 .032 .73 .08 Wat12 .5 .186 .25 .92 .08 Wat13 .5 .040 .25 .96 .08 Wat14 .53 .168 .66 .26 .08