AM_Muscovite_17 Formula: O11.958 F.041 Cl.001 Si3.135 Al2.691 Ti.033 Fe.102 Cr.108 Mg.11 (Ba.012 Na.029 K.959) H1.456 Name: Muscovite Unit cell: 5.206 9.04 20.058 90.0 95.79 90.0 , V=939.16 Space group: C12/C1 (15)

Brigatti M F , Galli E , Medici L , Poppi L , Cibin G , Marcelli A , Mottana A , European Journal of Mineralogy , 13 (2001) p.377-389, Chromium-containing muscovite: crystal chemistry and XANES spectroscopy, Locality: Northwest Nelson - Anatoki River