AM_Abswurmbachite Formula: (Mn6.44 Cu.56) Si O12 Name: Abswurmbachite Unit cell: 9.406 9.406 18.546 90.0 90.0 90.0 , V=1640.82 Space group: I41/ACD (142)

Reinecke T , Tillmanns E , Bernhardt H J , Neues Jahrbuch fur Mineralogie, Abhandlungen , 163 (1991) p.117-143, Abswurmbachite, CuMn6[O8/SiO4], a new mineral of the braunite, group: natural occurrence, synthesis, and crystal structure