AM_Cronstedtite_4 Formula: Fe3.52 Si1.48 O9 H4 Name: Cronstedtite Unit cell: 5.49 5.49 7.086 90.0 90.0 120.0 , V=184.96 Space group: P31M (157)

Hybler J , European Journal of Mineralogy , 18 (2006) p.197-205, Parallel intergrowths in cronstedtite-1T:, determination of the degree of disorder, Locality: Litosice, Czech Republic, Sample: LIT, Note: 1T polytype