IMA mineral species Gemstone

Afghanite

(Na,K)₂₂Ca₁₀(Si₂₄Al₂₄)O₉₆(SO₄)₆Cl₆

Tectosilicate mineral.

Blue White & Clear

Afghanite specimen — Afghanite (Afghanistan) 1.jpg · Wikimedia Commons (see file page for author & license)

Properties

🔷 Trigonal✏️ streak white

Chemical formula	(Na,K)₂₂Ca₁₀(Si₂₄Al₂₄)O₉₆(SO₄)₆Cl₆
Elements	Na, K, Ca, Si, Al, O, S, Cl
Crystal system	Trigonal
Mohs hardness	—
Density	—
Streak	white
Color	blue, colorless
IMA symbol	Afg
Nickel–Strunz class	9.FB.05

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

🌍 Where it's found

Type locality (where it was first described): Ladjuar Medam, Afghanistan

Learn more

Afghanite on Mindat.org
Wikipedia article
Wikidata item Q978346 (source of this page's data – you can correct it there)