Mineraldle
Puzzle #4 was wagnerite.
Wagnerite is a mineral, a combined phosphate and fluoride of iron and magnesium, with the formula (Mg,Fe2+)2PO4F. It occurs in pegmatite associated with other phosphate minerals. It is named after Franz Michael von Wagner (1768–1851), a German mining official in Munich.
Read about it on Wikipedia →
What the record says
Puzzle 4 ran on 19 Jul 2026 and the answer was wagnerite, played with 6 guesses against 4 columns. On the record: Crystal system - monoclinic; Strunz group - phosphates-related; Elements - F, Mg, O, P; Named after - person.
Beyond the grid the record adds Formula - Mgâ‚‚POâ‚„F; Named after - Franz Michael von Wagner.
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
- phosphates-related
- Elements
- F, Mg, O, P
- Named after
- person
Also on the record
- Formula
- Mgâ‚‚POâ‚„F
- Named after
- Franz Michael von Wagner