What does the cryptic crossword clue "Mineral found in no other mine ultimately (3)" mean?

The definition is "Mineral". The wordplay uses acrostic. last letters of "no other mine" = ORE; definition: "Mineral" The answer is ORE.

Mineral found in no other mine ultimately (3)

Times Cryptic #29142 | 7 Down | 2025-02-01 flower