Stavelotite-(La)
Stavelotite-(La) is an IMA-recognized mineral species in the silicate class, with the chemical formula La₃Mn²⁺₃Cu²⁺(Mn³⁺,Fe³⁺,Mn⁴⁺)₂₆(Si₂O₇)₆O₃₀.
It crystallizes in the hexagonal crystal system (space group P3_1).
Key properties: specific gravity 4.489; Metallic luster.
IMA symbol Svt-La, IMA status: approved, named in 2004.
A minor late-stage, accessory phase in a quartz vein cross-cutting highly oxidized manganiferous phyllites.
It is found associated with Albite, braunite, hematite, hollandite-strontiomelane, kanonaite, Mn-oxides, muscovite.
The name refers to the Stavelot Massif in the Belgian Ardennes Mountains, and Stavelot, a historical town in eastern Belgium. The suffix indicates the dominant rare earth element, Lanthanum.
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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