English
ferroceladonite
From ferro- + celadonite.
Formed from ferro- + celadonite
French celadon ‘sea-green’
English celadonite
Today it means
noun A monoclinic-prismatic dark bluish green mineral containing hydrogen, iron, oxygen, potassium, and silicon.
Language periods are conventional ranges, not dates for this word.
Etymograph / ferroceladonite