Mineraldle
Puzzle #82 was dolomite.
Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg(CO3)2. The term is also used for a sedimentary carbonate rock composed mostly of the mineral dolomite (see Dolomite (rock)). An alternative name sometimes used for the dolomitic rock type is dolostone.
Read about it on Wikipedia →
What the record says
Puzzle 82 ran on 5 Oct 2026 and the answer was dolomite, played with 6 guesses against 4 columns. On the record: Crystal system - trigonal; Strunz group - carbonates-nitrates; Elements - C, Ca, Mg, O; Named after - person.
Beyond the grid the record adds Formula - CaMg(CO₃)₂; Named after - Déodat Gratet de Dolomieu.
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
- trigonal
- Strunz group
- carbonates-nitrates
- Elements
- C, Ca, Mg, O
- Named after
- person
Also on the record
- Formula
- CaMg(CO₃)₂
- Named after
- Déodat Gratet de Dolomieu