Mineraldle
Puzzle #1 was stolzite.
Stolzite is a mineral, a lead tungstate; with the formula PbWO4. It is similar to, and often associated with, wulfenite which is the same chemical formula except that the tungsten is replaced by molybdenum. Stolzite crystallizes in the tetragonal crystal system and is dimorphous with the monoclinic form raspite.
Read about it on Wikipedia →
What the record says
Puzzle 1 ran on 16 Jul 2026 and the answer was stolzite, played with 6 guesses against 4 columns. On the record: Crystal system - tetragonal; Strunz group - sulfates-related; Elements - O, Pb, W; Named after - person.
Beyond the grid the record adds Formula - PbWOâ‚„; Named after - Johann Anton Stolz.
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
- tetragonal
- Strunz group
- sulfates-related
- Elements
- O, Pb, W
- Named after
- person
Also on the record
- Formula
- PbWOâ‚„
- Named after
- Johann Anton Stolz