A purplish- or yellowish-brown ferromagnesian silicate mineral of the amphibole group which occurs as fibrous or lamellar masses, especially in metamorphic rocks.
Chemical formula: (Mg, Fe)₇Si₈O₂₂(OH)₂. Crystal system: orthorhombic.
Early 19th century; earliest use found in Stephen Weston (1747–1830), antiquary and classical scholar. From German Anthophyllit from post-classical Latin anthophyllum clove + German -it.