AM_Na(NaMg)Mg5Si8O22(OH)2_1 Formula: Na1.71 Mg6.13 Si8 O24 (H1.37 D.63) Name: Na(NaMg)Mg5Si8O22(OH)2 Unit cell: 9.71887 17.93853 5.26923 90.0 102.526 90.0 , V=896.78 Space group: P121/M1 (11)

Iezzi G , Gatta G D , Kockelmann W , Della Ventura G , Rinaldi R , Schafer W , Piccinini M , Gaillard F , American Mineralogist , 90 (2004) p.695-700, Low-T neutron powder-diffraction and synchrotron-radiation IR study of synthetic, amphibole Na(NaMg)Mg5Si8O22(OH)2, Sample: T = 298 K