Crystopedia
IMA mineral species

Ferriallanite-(La)

Ca(La,Ce,Th)(Fe³⁺,Al)(Al,Fe³⁺)(Fe²⁺,Mn,Ti,Mg)(SiO₄)(Si₂O₇)O(OH)

Epidote supergroup, sorosilicate mineral.

Properties

🔷 Monoclinic
Chemical formulaCa(La,Ce,Th)(Fe³⁺,Al)(Al,Fe³⁺)(Fe²⁺,Mn,Ti,Mg)(SiO₄)(Si₂O₇)O(OH)
ElementsCa, La, Ce, Th, Fe, Al, Mn, Ti, Mg, Si, O, H
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolFaln-La
Nickel–Strunz class9.BG.05b

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

🌍 Where it's found

Type locality (where it was first described): In den Dellen quarries, Germany

  • 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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