IMA mineral species

Castellaroite

Mn²⁺₃(AsO₄)₂*₄H₂O

Arsenate mineral.

White & Clear

Castellaroite specimen
Castellaroite AndreRobbemond FOV5mm-0.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaMn²⁺₃(AsO₄)₂*₄H₂O
ElementsMn, As, O, H
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolCtr

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

🌍 Where it's found

Type locality (where it was first described): Valletta mine, Italy · Monte Nero mine, Italy

  • 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.