IMA mineral species

Kollerite

(NH₄)₂Fe³⁺(SO₃)₂(OH)*H₂O

Hydrous sulfite mineral.

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

Properties

🔷 Orthorhombic

Chemical formula	(NH₄)₂Fe³⁺(SO₃)₂(OH)*H₂O
Elements	N, H, Fe, S, O
Crystal system	Orthorhombic
Mohs hardness	—
Density	—
Streak	—
Color	—
IMA symbol	Klr

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

🌍 Where it's found

Type locality (where it was first described): Köves Hill, Hungary

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

Kollerite on Mindat.org
Wikidata item Q66476991 (source of this page's data – you can correct it there)