Mineraldle
Puzzle #73 was laurionite.
Laurionite is a lead halide mineral. It forms colorless to white crystals in the orthorhombic crystal system and is dimorphous with paralaurionite, both members of the matlockite group.
Read about it on Wikipedia →
What the record says
Puzzle 73 ran on 26 Sep 2026 and the answer was laurionite, played with 6 guesses against 4 columns. On the record: Crystal system - orthorhombic; Strunz group - halides; Elements - Cl, H, O, Pb; Named after - place.
Beyond the grid the record adds Formula - PbCl(OH); Named after - Laurium.
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
- halides
- Elements
- Cl, H, O, Pb
- Named after
- place
Also on the record
- Formula
- PbCl(OH)
- Named after
- Laurium