Mineraldle
Puzzle #9 was shattuckite.
Shattuckite is a copper silicate hydroxide mineral with formula Cu5(SiO3)4(OH)2. It crystallizes in the orthorhombic – dipyramidal crystal system and usually occurs in a granular massive form and also as fibrous acicular crystals. It is closely allied to plancheite in structure and appearance.
Read about it on Wikipedia →
What the record says
Puzzle 9 ran on 24 Jul 2026 and the answer was shattuckite, played with 6 guesses against 4 columns. On the record: Crystal system - orthorhombic; Strunz group - silicates; Named after - other. 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 - naming locality.
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
- orthorhombic
- Strunz group
- silicates
- Elements
- Not recorded
- Named after
- other
Also on the record
- Named after
- naming locality