Crossword Genius

Unrefined rock (3)

Ross

I believe the answer is:

ore

'unrefined rock' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for ore that I've seen before include "Unwrought iron" , "Material for smelting" , "Rock from which metal is extracted" , "Danish currency" , "Mined material" .)

I've seen this clue in the Family Time, the Universal and the Penny Press.
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