IMA mineral species

Adranosite

(NH₄)₄NaAl₂(SO₄)₄Cl(OH)₂

Sulfate mineral.

Adranosite specimen — Therasiaite on adranosite.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula	(NH₄)₄NaAl₂(SO₄)₄Cl(OH)₂
Elements	N, H, Na, Al, S, O, Cl
Crystal system	Tetragonal
Mohs hardness	—
Density	—
Streak	white
Color	white, colorlessness
IMA symbol	Arn
Nickel–Strunz class	7.BC

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

🌍 Where it's found

Type locality (where it was first described): La Fossa crater, Italy

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

Adranosite on Mindat.org
Wikipedia article
Wikidata item Q19726921 (source of this page's data – you can correct it there)