AM_Nekoite
Formula: Ca3 Si6 O22 H14
Name: Nekoite
Unit cell: 7.588 9.793 7.339 111.77 103.5 86.53 , V=492.26
Space group: P1 (1)

Alberti A , Galli E , American Mineralogist , 65 (1980) p.1270-1276, The structure of nekoite, Ca3Si6O15*7H2O, a new type of sheet silicate, Locality: Caxias do Sul, Rio Grande do Sul, Brazil