AM_Serandite_1 Formula: Mn1.66 Ca.34 Na Si3 O9 Name: Serandite Unit cell: 9.909 10.667 6.913 99.1 100.51 82.49 , V=705.48 Space group: C-1 (2)

Ohashi Y , Finger L W , American Mineralogist , 63 (1978) p.274-288, The role of octahedral cations in pyroxenoid crystal chemistry. I. Bustamite,, wollastonite, and the pectolite-schizolite-serandite series, sample SRN, from Rouma, Island of Los, Guinea