IMA mineral species

Grimselite

K₃Na(UO₂)(CO₃)₃·H₂O

Uranyl carbonate mineral.

Grimselite specimen — Grimselite.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula	K₃Na(UO₂)(CO₃)₃·H₂O
Elements	K, Na, U, O, C, H
Crystal system	Hexagonal
Mohs hardness	—
Density	—
Streak	—
Color	—
IMA symbol	Gsl
Nickel–Strunz class	5.ED.35

“—” means no reliable value in Wikidata yet. Check Mindat for full data.

🌍 Where it's found

Type locality (where it was first described): Gerstenegg-Sommerloch tunnel, Switzerland

Type locality
Notable source / deposit
Country of origin

Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.

Learn more

Grimselite on Mindat.org
Wikidata item Q3776816 (source of this page's data – you can correct it there)