Glauconite
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A greenish form of mica found in greensand.
- 2 a green mineral consisting of hydrated silicate of potassium or iron or magnesium or aluminum; found in greensand wordnet
Etymology
From German Glaukonit, from Ancient Greek γλαυκός (glaukós, “blue-green”) + -ite.