Mineraldle
Puzzle #80 was lópezite.
Lópezite is a rare, red, and carcinogenic chromate mineral with chemical formula: K2Cr2O7. It crystallizes in the triclinic crystal system.
What the record says
Puzzle 80 ran on 3 Oct 2026 and the answer was lópezite, played with 6 guesses against 4 columns. On the record: Crystal system - triclinic; Strunz group - sulfates-related; Elements - Cr, K, O; Named after - person.
Beyond the grid the record adds Formula - K₂Cr₂O₇; Named after - Emiliano López Saa.
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
- triclinic
- Strunz group
- sulfates-related
- Elements
- Cr, K, O
- Named after
- person
Also on the record
- Formula
- K₂Cr₂O₇
- Named after
- Emiliano López Saa