Category:Epidote

Ep"i*dote, n. Etym: [Gr. épidote. So named from the enlargement of the base of the primary, in some of the secondary forms.] (Min.)

Defn: A mineral, commonly of a yellowish green (pistachio) color, occurring granular, massive, columnar, and in monoclinic crystals. It is a silicate of alumina, lime, and oxide of iron, or manganese.

Note: The Epidote group includes ordinary epidote, zoisite or lime epidote, piedmontite or manganese epidote, allanite or serium epidote.