AM_Sampleite_1 Formula: Na Ca Cu5 P4 O20.56 Cl H10 Name: Sampleite Unit cell: 9.695 9.673 19.739 90.0 102.61 90.0 , V=1806.47 Space group: P121/C1 (14)

Giester G , Kolitsch U , Leverett P , Turner P , Williams P A , European Journal of Mineralogy , 19 (2007) p.75-93, The crystal structures of lavendulan, sampleite, and a new polymorph of sampleite, Locality: Lake Boga, Victoria, Australia, Note: This is a polymorph or perhaps polytype of sampleite