IMA mineral species

Alunite

KAl₃(SO₄)₂(OH)₆

Alunite supergroup, sulfate mineral.

Red Yellow Brown Gray White & Clear

Alunite specimen — Mineraly.sk - alunit m.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula	KAl₃(SO₄)₂(OH)₆
Elements	K, Al, S, O, H
Crystal system	Trigonal
Mohs hardness	—
Density	—
Streak	white
Color	—
IMA symbol	Alu
Nickel–Strunz class	7.BC.10

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

Learn more

Alunite on Mindat.org
Wikipedia article
Wikidata item Q338106 (source of this page's data – you can correct it there)