— glauconitic /glaw'keuh nit"ik/ , adj.
/glaw"keuh nuyt'/ , n.
a greenish micaceous mineral consisting essentially of a hydrous silicate of potassium, aluminum, and iron and occurring in greensand, clays, etc.
[ 1830-40; glaukón, neut. of glaukós (see GLAUCO-) + -ITE 1 ]