Mineraldle
Puzzle #66 was iranite.
Iranite (Persian: ایرانیت) is a triclinic lead copper chromate mineral with formula Pb10Cu(CrO4)6(SiO4)2(F,OH)2. It was first described from an occurrence in Iran. It is the copper analogue of hemihedrite (Pb10Zn(CrO4)6(SiO4)2(F,OH)2).
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What the record says
Puzzle 66 ran on 19 Sep 2026 and the answer was iranite, played with 6 guesses against 4 columns. On the record: Crystal system - triclinic; Strunz group - sulfates-related; Named after - place. 1 of the 4 columns is blank in the source (Elements), so nobody could score it either way.
Beyond the grid the record adds Named after - Iran.
Mineraldle builds its record from Wikidata - CC0 1.0. The description above comes from the same place the game credits on every reveal: English Wikipedia verbatim extract, CC BY-SA 4.0. The puzzle itself is still playable in the archive, and every answer that has been and gone is listed on the past-answers page.
How it scored
- Crystal system
- triclinic
- Strunz group
- sulfates-related
- Elements
- Not recorded
- Named after
- place
Also on the record
- Named after
- Iran