IMA mineral species

Agricolaite

K₄(UO₂)(CO₃)₃

Uranyl carbonate mineral.

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

Properties

Chemical formula	K₄(UO₂)(CO₃)₃
Elements	K, U, O, C
Crystal system	Monoclinic
Mohs hardness	4
Density	3.531 g/cm³
Streak	yellow
Color	—
Fracture	uneven
IMA symbol	Agc
Nickel–Strunz class	5.ED.50

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

🌍 Where it's found

Type locality (where it was first described): Jáchymov, Czech Republic

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

Agricolaite on Mindat.org
Wikidata item Q19744022 (source of this page's data – you can correct it there)