AM_Cuspidine_3
Formula: Ca3.69 Zr.14 Na.17 Si2 O7 F2
Name: Cuspidine
Unit cell: 10.919 10.485 7.485 90.0 109.55 90.0 , V=807.52
Space group: P121/A1 (14)

Bellezza M , Merlino S , Perchiazzi N , European Journal of Mineralogy , 16 (2004) p.957-969, Chemical and structural study of the Zr,Ti-disilicates in the venanzite, from Pian di Celle, Umbria, Italy, Locality: Pian di Celle, Umbria, Italy