IMA mineral species

Geigerite

Mn²⁺₅(AsO₄)₂(HAsO₄)₂·10H₂O

Arsenate mineral.

RedWhite & Clear

Properties

Chemical formulaMn²⁺₅(AsO₄)₂(HAsO₄)₂·10H₂O
ElementsMn, As, O, H
Crystal system—
Mohs hardness—
Density—
Streakwhite
Color—
IMA symbolGgr
Nickel–Strunz class8.CE.05

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

🌍 Where it's found

Type locality (where it was first described): Falotta, Switzerland

  • 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.