Mineraldle
Puzzle #108 was margaritasite.
Margaritasite is a yellow, caesium-bearing mineral in the carnotite group. Its chemical formula is (Cs, K, H3O)2(UO2)2V2O8·H2O and its crystal system is monoclinic (space group P21/a).
Read about it on Wikipedia →
What the record says
Puzzle 108 ran on 31 Oct 2026 and the answer was margaritasite, played with 6 guesses against 4 columns. On the record: Crystal system - monoclinic; Strunz group - oxides-hydroxides; Elements - Cs, H, O, U, V. 1 of the 4 columns is blank in the source (Named after), so nobody could score it either way.
Beyond the grid the record adds Formula - Cs₂(UO₂)₂(VO₄)₂·H₂O.
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
- monoclinic
- Strunz group
- oxides-hydroxides
- Elements
- Cs, H, O, U, V
- Named after
- Not recorded
Also on the record
- Formula
- Cs₂(UO₂)₂(VO₄)₂·H₂O