Mineraldle
Puzzle #93 was ajoite.
Ajoite is a hydrated sodium potassium copper aluminium silicate hydroxide mineral. Ajoite has the chemical formula (Na,K)Cu7AlSi9O24(OH)6·3H2O, and minor Mn, Fe and Ca are usually also present in the structure. Ajoite is used as a minor ore of copper.
What the record says
Puzzle 93 ran on 16 Oct 2026 and the answer was ajoite, played with 6 guesses against 4 columns. On the record: Crystal system - triclinic; Strunz group - silicates; Elements - Al, Cu, H, K, O, Si; Named after - place.
Beyond the grid the record adds Formula - K₃Cu²⁺₂₀Al₃Si₂₉O₇₆(OH)₁₆·8H₂O; Named after - Ajo.
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, Cu, H, K, O, Si
- Named after
- place
Also on the record
- Formula
- K₃Cu²⁺₂₀Al₃Si₂₉O₇₆(OH)₁₆·8H₂O
- Named after
- Ajo