gastalditen.

/ɡaˈstaldʌɪt/Etymology: Named by Strüver in 1875 after Prof. B. Gastaldi: see -ite suffix1.
Mineralogy.
the world > the earth > minerals > types of mineral > silicates > amphibole (double chain) > [noun] > glaucophane
1882 J. D. Dana App. iii. 52 A mineral closely related to glaucophane is called gastaldite.
This entry has not yet been fully updated (first published 1898; most recently modified version published online March 2020).