Mineraldle
Puzzle #20 was chrysotile.
Chrysotile (/ˈkrɪsəˌtʌɪl/, /ˈkrɪsəˌtaɪl/, or /ˈkrɪsətɪl/) or white asbestos is the most commonly encountered form of asbestos, accounting for approximately 95% of the asbestos in the United States and a similar proportion in other countries. It is a soft, fibrous silicate mineral in the serpentine subgroup of phyllosilicates; as such, it is distinct from other asbestiform minerals in the amphibole group. Its idealized chemical formula is Mg3(Si2O5)(OH)4.
Read about it on Wikipedia →
What the record says
Puzzle 20 ran on 4 Aug 2026 and the answer was chrysotile, played with 6 guesses against 4 columns. On the record: Crystal system - monoclinic; Strunz group - silicates; Elements - H, Mg, O, Si; Named after - other.
Beyond the grid the record adds Formula - Mg₃Si₂O₅(OH)₄; Named after - fiber, gold.
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
- silicates
- Elements
- H, Mg, O, Si
- Named after
- other
Also on the record
- Formula
- Mg₃Si₂O₅(OH)₄
- Named after
- fiber, gold