IMA mineral species

Césarferreiraite

Fe²⁺Fe³⁺₂(AsO₄)₂(OH)₂·8H₂O

Hydrous iron arsenate mineral.

Césarferreiraite specimen
Césarferreiraite -892273.png · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaFe²⁺Fe³⁺₂(AsO₄)₂(OH)₂·8H₂O
ElementsFe, As, O, H
Crystal systemTriclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolCéf

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

🌍 Where it's found

Type locality (where it was first described): Conselheiro Pena, Brazil

  • 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.