Min. [Improperly for *syhadrite, f. the Syhadree Mountains in Bombay, where found: see -ITE.] A mineral of uncertain composition, supposed to be related to stilbite.
1865. Shepard, in Amer. Jrnl. Sci., Ser. II. XL. 110. Syhedrite. I have thus named, from its locality…. The mineral occurs in trap at Thore-Ghat, in the Syhedree Mountains, Bombay.
