| Miyajima H (2014) Jadeitite from Itoigawa, Niigata Prefecture, central Japan. 21 st meeting of the International Mineralogical Association. p 200 Hiroshi Miyajima, Satoshi Matsubara, Kazumi Yokoyama, Ritsuro Miyawaki (2005): Black jadeitite from Itoigawa district, Niigata Prefecture. {https://www.jstage.jst.go.jp/article/kobutsu/2005/0/2005_0_121/_article/-char/en] |