Crystopedia
IMA mineral species

Mullite

3Al₂O₃·2SiO₂

Nesosilicate mineral.

PinkGrayWhite & Clear

Mullite specimen
Mullite-655833.jpg · Wikimedia Commons (see file page for author & license)

Properties

🔷 Orthorhombic✏️ streak white
Chemical formula3Al₂O₃·2SiO₂
ElementsAl, O, Si
Crystal systemOrthorhombic
Mohs hardness—
Density—
Streakwhite
Color—
IMA symbolMul
Nickel–Strunz class9.AF.20

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

🌍 Where it's found

Type locality (where it was first described): Isle of Mull, United Kingdom

  • 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.

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