AM_Sepiolite
Formula: Mg4 Si6 O22.91 H8.48
Name: Sepiolite
Unit cell: 13.405 27.016 5.275 90.0 90.0 90.0 , V=1910.34
Space group: PNCN (52)

Post J E , Bish D L , Heaney P J , American Mineralogist , 92 (2007) p.91-97, Synchrotron powder X-ray diffraction study of the structure and dehydration, behavior of sepiolite, Sample: T = room temperature, in air, Locality: Durango, Mexico