IMA mineral species

Sainfeldite

Ca₅(AsO₄)₂(AsO₃OH)₂·4H₂O

Hydrous arsenate mineral.

Sainfeldite specimen
Picropharmacolite and Sainfieldite.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaCa₅(AsO₄)₂(AsO₃OH)₂·4H₂O
ElementsCa, As, O, H
Crystal system—
Mohs hardness—
Density—
Streak—
Color—
IMA symbolSai
Nickel–Strunz class8.CB.10

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

🌍 Where it's found

Type locality (where it was first described): Mount Neuenberg silver 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.