Mineraldle
Puzzle #16 was stibiconite.
Stibiconite, also formerly known as stiblite or antimony ochre is an antimony oxide mineral with formula: Sb3O6(OH). Its name originates from Greek stÃbi (στίβι), 'antimony' and kónis (κόνις), 'powder', alluding to its composition and habit. It is a member of the pyrochlore super group.
Read about it on Wikipedia →
What the record says
Puzzle 16 ran on 31 Jul 2026 and the answer was stibiconite, played with 6 guesses against 4 columns. On the record: Crystal system - cubic; Strunz group - oxides-hydroxides; 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 - antimony, powder.
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
- cubic
- Strunz group
- oxides-hydroxides
- Elements
- Not recorded
- Named after
- other
Also on the record
- Named after
- antimony, powder