IMA mineral species

Rollandite

Cu₃(AsO₄)₂ * 4H₂O

Hydrous copper arsenate mineral.

Properties

Chemical formulaCu₃(AsO₄)₂ * 4H₂O
ElementsCu, As, O, H
Crystal systemOrthorhombic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolRol
Nickel–Strunz class8.CD.30

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

🌍 Where it's found

Type locality (where it was first described): Roua mines, France

  • 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.