Citation: Miyajima, H.; Matsubara, S.; Miyawaki, R.; Hirokawa, K. (2003). Niigataite, Ca Sr Al3 (Si2 O7) (Si O4) O (O H): Sr-analogue of clinozoisite, a new member of the epidote group from the Itoigawa-Ohmi district, Niigata prefecture, central Japan. Journal of Mineralogical and Petrological Sciences, 98, pp. 118-129.
Formula: Al2.74 Ca1.28 Fe0.26 H O13 Si3 Sr0.72
Chemical name:Ca (Ca0.28 Sr0.72) (Fe0.26 Al2.74) (Si2 O7) (Si O4) O (O H)