Mineraldle
Puzzle #29 was anapaite.
Anapaite is a calcium–iron phosphate mineral with formula: Ca2Fe2+(PO4)2·4H2O. It is a mineral that typically occurs in cavities in fossil bearing sedimentary rocks. It is also found in phosphate bearing iron ores and rarely in pegmatites. It is commonly found with goethite, siderite and vivianite.
What the record says
Puzzle 29 ran on 13 Aug 2026 and the answer was anapaite, played with 6 guesses against 4 columns. On the record: Crystal system - triclinic; Strunz group - phosphates-related; Elements - Ca, Fe, H, O, P; Named after - place.
Beyond the grid the record adds Formula - Ca₂Fe²⁺(PO₄)₂·4H₂O; Mohs hardness - 3.5; Named after - Anapa.
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
- phosphates-related
- Elements
- Ca, Fe, H, O, P
- Named after
- place
Also on the record
- Formula
- Ca₂Fe²⁺(PO₄)₂·4H₂O
- Mohs hardness
- 3.5
- Named after
- Anapa