Mineraldle
Puzzle #57 was cohenite.
Cohenite is a naturally occurring iron carbide mineral with the chemical structure (Fe, Ni, Co)3C. This forms a hard, shiny, silver mineral which was named by E. Weinschenk in 1889 after the German mineralogist Emil Cohen, who first described and analysed material from the Magura meteorite found near Slanica, Žilina Region, Slovakia. Cohenite is found in rod-like crystals in iron meteorites.
Read about it on Wikipedia →
What the record says
Puzzle 57 ran on 10 Sep 2026 and the answer was cohenite, played with 6 guesses against 4 columns. On the record: Crystal system - orthorhombic; Strunz group - native-elements; Elements - C, Fe; Named after - person.
Beyond the grid the record adds Formula - Fe₃C; Named after - Emil Cohen.
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
- native-elements
- Elements
- C, Fe
- Named after
- person
Also on the record
- Formula
- Fe₃C
- Named after
- Emil Cohen