leucopyrite

Etymology tree
Proto-Indo-European *lewk-
Proto-Indo-European *-ós
Proto-Indo-European *lewkós
Proto-Hellenic *leukós
Ancient Greek λευκός (leukós)der.
English leuco-
Proto-Indo-European *péh₂wr̥
Proto-Hellenic *pāwər
Ancient Greek πῦρ (pûr)
Proto-Indo-European *-tósder.
Ancient Greek -της (-tēs)der.
Ancient Greek -ῑ́της (-ī́tēs)
Ancient Greek πῠρῑ́της (pŭrī́tēs)bor.
Latin pȳritēsder.
Old French pyriteder.
English pyrite
English leucopyrite
From leuco- + pyrite.