Mineraldle
Puzzle #63 was dundasite.
Dundasite is a rare lead aluminium carbonate mineral. The mineral is named after the type locality, Dundas, Tasmania, Australia. The mineral was first discovered in the Adelaide Proprietary Mine.
Read about it on Wikipedia →
What the record says
Puzzle 63 ran on 16 Sep 2026 and the answer was dundasite, played with 6 guesses against 4 columns. On the record: Crystal system - orthorhombic; Strunz group - carbonates-nitrates; Elements - Al, C, H, O, Pb; Named after - place.
Beyond the grid the record adds Formula - PbAl₂(CO₃)₂(OH)₄·H₂O; Named after - Dundas.
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
- carbonates-nitrates
- Elements
- Al, C, H, O, Pb
- Named after
- place
Also on the record
- Formula
- PbAl₂(CO₃)₂(OH)₄·H₂O
- Named after
- Dundas