[化] 海绿石

[ noun ]
a green mineral consisting of hydrated silicate of potassium or iron or magnesium or aluminum; found in greensand
<noun.substance>

Glauconite \Glau"co*nite\, n. [Cf. F. glauconite, glauconie, fr.
L. glaucus. See {Glaucous}.] (Min.)
The green mineral characteristic of the greensand of the
chalk and other formations. It is a hydrous silicate of iron
and potash. See {Greensand}.