dawsoniten.

/ˈdɔːsənʌɪt/Etymology: Named 1874, after Sir J. W. Dawson of Montreal: see -ite suffix1.
Mineralogy.
1875 3rd Ser. 9 64 On Dawsonite, a new mineral.
This entry has not yet been fully updated (first published 1894; most recently modified version published online June 2018).