gearksutite
noun
ge·ark·sut·ite
jēˈärksəˌtīt
plural -s
: a mineral CaAl(OH)F4.H2O consisting of an earthy clayey hydrous calcium aluminum fluoride occurring with cryolite
Word History
Etymology
ge- + arksutite Na5Al3F14 from Arksut (Arsuk) fjord, Greenland + English -ite