The story
From the Greek δύο (meaning 'two') and ξένος (meaning 'guest'), in allusion to the unique association of silica and arsenious oxide found in the mineral, plus the suffix -ite.
Etymology from Wiktionary, CC BY-SA 4.0.
dixenite
Today it means: A trigonal-pyramidal mineral containing arsenic, copper, hydrogen, iron, manganese, oxygen, and silicon. Full definition →