Minerals often ending in -ite (4)

I believe the answer is:

ores

(Other definitions for ores that I've seen before include "Mineral deposits" , "Bauxite, haematite etc" , "Sources of metal" , "Rocks or minerals containing metals" , "Metal-bearing minerals" .)

I've seen this clue in the Universal.

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.