Kampelite
Kampelite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Ba₃Mg₁.₅Sc₄(PO₄)₆(OH)₃·4H₂O.
It crystallizes in the orthorhombic crystal system (space group Pnma).
Key properties: Mohs hardness 1; specific gravity 3.07; White streak; Pearly luster; optically biaxial.
IMA symbol Kpl, IMA status: approved, named in 2017.
A product of low-temperature hydrothermal alteration of Sc-bearing baddeleyite. In a void within the calcite-magnetite phoscorite (enriched in hydroxylapatite and Sc-rich baddeleyite) in the axial zone of a phoscorite-carbonatite pipe.
It is found associated with Quintinite-2H, pyrite, bobierrite, quintinite-3R.
The mineral was named to honor Russian mining engineer Felix Borisovich Kampel’ (b.
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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