AM_Palygorskite
Formula: Al1.1 Mg Si3.9 O14.92 H9
Name: Palygorskite
Unit cell: 13.179 17.852 5.2316 90.0 107.77 90.0 , V=1172.12
Space group: C12/M1 (12)

Post J E , Heaney P J , American Mineralogist , 93 (2008) p.667-675, Synchotron powder X-ray diffraction study of the structure and dehydration, behavior of palygorskite, Locality: Yulu River, Korea, Sample: T = 100 K