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Silicate

Ferro-katophorite

Na(NaCa)(Fe²⁺₄Al)(Si₇Al)O₂₂(OH)₂
Crystal systemMonoclinic
ClassSilicate
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Ferro-katophorite specimen

Sharp black ferro-katophorite associated to orange pyrochlore crystals from this classic locality in Azores (Agua de Pau Volcano, San Miguel Island, Azores District, Portugal). — Photo: David Hospital · CC BY-SA 4.0

Ferro-katophorite

Ferro-katophorite is an IMA-recognized mineral species in the silicate class, with the chemical formula Na(NaCa)(Fe²⁺₄Al)(Si₇Al)O₂₂(OH)₂.

It crystallizes in the monoclinic crystal system. It is a member of the Amphibole structural group.

IMA symbol Foktp, IMA status: approved, named in 1894.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet. Browse more F minerals or help write this entry.