The story
Named in 1984 by Hidehiko Shimazaki and others in honour of Ryoichi Sadanaga (定永両一) (1920-2002), professor of crystallography at the University of Tokyo. Sadanaga + -ite
Etymology from Wiktionary, CC BY-SA 4.0.
sadanagaite
Today it means: A monoclinic mineral containing aluminum, calcium, hydrogen, iron, magnesium, oxygen, potassium, silicon, sodium, and titanium. Full definition →