IMA mineral species

Apjohnite

Mn²⁺Al₂(SO₄)₄ * 2₂H₂O

Sulfate mineral.

Yellow Green Pink White & Clear

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

Properties

🔷 Monoclinic

Chemical formula	Mn²⁺Al₂(SO₄)₄ * 2₂H₂O
Elements	Mn, Al, S, O, H
Crystal system	Monoclinic
Mohs hardness	—
Density	—
Streak	—
Color	—
IMA symbol	Apj
Nickel–Strunz class	7.CB.85

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

Learn more

Apjohnite on Mindat.org
Wikipedia article
Wikidata item Q1124222 (source of this page's data – you can correct it there)