AM_Boromuscovite
Formula: Al1.92 (Si3 B) K.41 O12
Name: Boromuscovite
Unit cell: 5.09 8.822 19.819 90.0 95.62 90.0 , V=885.67
Space group: C12/C1 (15)

Liang J , Hawthorne F C , Novak M , Cerny P , The Canadian Mineralogist , 33 (1995) p.859-865, Crystal-structure refinement of boromuscovite polytypes using a coupled, Rietveld-static-structure energy-minimization method, Sample: 2M1 polytype, Locality: Recice, Czech Republic