noun Etymology: German Glaukonit, irregular from Greek glaukos Date: 1836 a mineral consisting of a dull green earthy iron potassium silicate occurring in greensand, glauconitic adjective
GLAUCONITE
Meaning of GLAUCONITE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012