pargasite
/ˈpɑːɡəsʌɪt/Mineralogy
noun
A green or greenish-blue variety of hornblende; specifically a calcium- and magnesium-rich monoclinic mineral of the amphibole group.
Origin
Early 19th century; earliest use found in Annals of Philosophy. From German Pargasit from Pargas, the name of an island in Finland where the mineral was found + -it.