Mineraldle
Puzzle #74 was akatoreite.
Akatoreite ((Mn2+, Fe2+)9Al2[(OH)3|HSi4O13]) is a mineral found in New Zealand.
What the record says
Puzzle 74 ran on 27 Sep 2026 and the answer was akatoreite, played with 6 guesses against 4 columns. On the record: Crystal system - triclinic; Strunz group - silicates; Elements - Al, H, Mn, O, Si; Named after - other.
Beyond the grid the record adds Formula - Mn²⁺₉Al₂Si₈O₂₄(OH)₈; Named after - Akatore Creek.
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
- silicates
- Elements
- Al, H, Mn, O, Si
- Named after
- other
Also on the record
- Formula
- Mn²⁺₉Al₂Si₈O₂₄(OH)₈
- Named after
- Akatore Creek