IMA mineral species ⚠ Handle with care

Carnotite

K₂(UO₂)₂(VO₄)₂·3H₂O

Uranyl vanadate mineral.

Carnotite specimen — Carnotite AZ AndersonMine PvdL-9.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula	K₂(UO₂)₂(VO₄)₂·3H₂O
Elements	K, U, O, V, H
Crystal system	Monoclinic
Mohs hardness	2
Density	—
Streak	yellow
Color	—
IMA symbol	Cnt
Nickel–Strunz class	4.HB.05

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

⚠ Handle With Care High caution

☢ Radioactive☠ Toxic if ingested😷 Dust / fibre inhalation hazard🚫 Don't make water elixirs

Why: A potassium uranyl vanadate, historically mined for uranium and radium. It is radioactive and often powdery, so it easily makes dust.

Safe handling: Store in a closed container in a ventilated place away from living areas, and label it. Don't keep it in pockets or bedrooms. Wash your hands after handling, never crush or grind it, and keep it away from children and pets.

Sources: Wikipedia: Carnotite · ATSDR ToxFAQs: Uranium · Mindat: Carnotite. General safety information only, not medical advice. More on safe handling.

Learn more

Carnotite on Mindat.org
Wikipedia article
Wikidata item Q409100 (source of this page's data – you can correct it there)