Min. [mod. f. (Ger. 1817) Gr. ἀμβλυγώνι-ος obtuse-angled + -ITE.] A greenish white or sea-green translucent mineral, occurring in obtuse-angled rhombic prisms, and consisting of alumina, lithia, potash, soda, iron, and fluoric acid; made by Dana the type of a group.
1847. in Craig.
1868. Dana, Min., 528. Phosphates, Arsenates, Antimonates: I. Anhydrous … VII. Amblygonite group.
