TRUDELLITE

trüˈdeˌlīt noun

( -s )

Etymology: Harry W. Trudell b 1884 American mineralogist + English -ite

: a mineral Al 10 Cl 12 (OH) 12 (SO 4 ) 3 .3OH 2 O(?) consisting of a hydrous basic aluminum chloride and sulfate and occurring in amber-yellow masses