gearksutiten.

/dʒiːˈɑːksuːtʌɪt/Etymology: < Greek γῆ earth (from its earthy appearance) + arksutite n. Named by Dana in 1868.
Mineralogy.
1868 J. D. Dana (ed. 5) 130 Gearksutite. Earthy, kaolin~like in aspect.
This entry has not yet been fully updated (first published 1898; most recently modified version published online March 2022).