Crossword Genius

Valuable minerals (4)

Ross

I believe the answer is:

ores

'valuable minerals' is the definition.
(I've seen this in another clue)

This is all the clue.

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

I've seen this clue in the L.A. Times Daily and the LA Times.
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