AM_Palygorskite_2
Formula: Al Mg Si4 O10.4
Name: Palygorskite
Unit cell: 10.755 15.353 5.281 90.0 96.17 90.0 , V=866.96
Space group: P121/A1 (14)

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: Lemesurier Island, Alaska, Sample: T = 1160 K