Crystopedia
IMA mineral species

Alluaudite

(Na,Ca)(Mn,Mg,Fe²⁺)(Fe³⁺,Mn²⁺)₂(PO₄)₃

Phosphate mineral.

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Alluaudite specimen
Alluaudite 2 Sodium iron manganese phosphate Pleasant Valley Mine near Fourmile Custer County South Dakota 2264Spp.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula(Na,Ca)(Mn,Mg,Fe²⁺)(Fe³⁺,Mn²⁺)₂(PO₄)₃
ElementsNa, Ca, Mn, Mg, Fe, P, O
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolAld
Nickel–Strunz class8.AC.10

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

🌍 Where it's found

Type locality (where it was first described): Varuträsk, Sweden

  • 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.

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