Olive-green mineral found in igneous and metamorphic rocks (7)
I believe the answer is:
olivine
(Other definitions for olivine that I've seen before include "mineral in rock" , "Dark green mineral" , "stone" , "Clear green gemstone" .)
I've seen this clue in The Mirror.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.