[glaw-kuh-nahyt] 
| a greenish micaceous mineral consisting essentially of a hydrous silicate of potassium, aluminum, and iron and occurring in greensand, clays, etc. |
| glau·co·nite (glô'kə-nīt') n. A greenish mineral of the mica group, a hydrous silicate of potassium, iron, aluminum, or magnesium, (K,Na)(Al,Fe,Mg)2(Al,Si)4O10(OH)2, found in greensand and used as a fertilizer and water softener. [German Glaukonit : Greek glaukon, neuter of glaukos, gray + -ite1.] glau'co·nit'ic (-nĭt'ĭk) adj. |
kəˌnaɪt