Kalifersite
Kalifersite is an IMA-recognized mineral species in the silicate class, with the chemical formula K₅Fe³⁺₇Si₂₀O₅₀(OH)₆·12H₂O.
It crystallizes in the triclinic crystal system (space group P-1).
Key properties: Mohs hardness 2; specific gravity 2.37; White streak; Earthy to silky luster.
IMA symbol Klf, IMA status: approved, named in 1996.
Found in hydrothermally altered peralkaline pegmatite in urtite.
It is found associated with Aegirine, fenaksite, pectolite.
Alludes to the chemical composition (kalium, ferrum, silicium).
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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