AM_Strontiopiemontite_1 Formula: (Ca1.38 Sr.62) Si3 Al1.74 Mn.94 Fe.32 O13 H Name: Strontiopiemontite Unit cell: 8.87 5.681 10.209 90.0 114.88 90.0 , V=466.69 Space group: P121/M1 (11)

Bonazzi P , Menchetti S , Palenzona A , European Journal of Mineralogy , 2 (1990) p.519-523, Strontiopiemontite, a new member of the epidote group,, from Val Graveglia, Liguria, Italy, Sample: SRPC, Locality: Val Graveglia, Liguria, Italy