AM_Harmotome_2 Formula: Ba Si5.34 Al2.22 O21.84 H11.16 Name: Harmotome Unit cell: 9.884 14.1 8.655 90.0 124.59 90.0 , V=992.99 Space group: P121/M1 (11)

Stuckenschmidt E , Fuess H , Kvick A , European Journal of Mineralogy , 2 (1990) p.861-874, Investigation of the structure of harmotome by X-ray (293 K, 100 K), and neutron diffraction (15 K), Sample: 15 K