IMA mineral species

Mckelveyite-(Y)

NaBa₃(Ca,U)Y(CO₃)₆·3H₂O

Carbonate mineral.

Red Yellow Green Brown Black Gray

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

Properties

🔷 Triclinic✏️ streak white

Chemical formula	NaBa₃(Ca,U)Y(CO₃)₆·3H₂O
Elements	Na, Ba, Ca, U, Y, C, O, H
Crystal system	Triclinic
Mohs hardness	—
Density	—
Streak	white
Color	—
IMA symbol	Mkv-Y
Nickel–Strunz class	5.CC.05

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

🌍 Where it's found

Type locality (where it was first described): Green River formation (Sweetwater Co.), United States

Learn more

Mckelveyite-(Y) on Mindat.org
Wikipedia article
Wikidata item Q3853408 (source of this page's data – you can correct it there)