Britvinite with hausmannite Field of view: 3 mm Locality: Långban, Filipstad, Vårmland, Sweden — Photo: Henk Smeets – tomeikminerals.com · CC BY 4.0
Britvinite
Britvinite is an IMA-recognized mineral species in the silicate class, with the chemical formula Pb₁₄Mg₉(Si₁₀O₂₈)(BO₃)₄(CO₃)₂(OH)₁₂F₂.
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Molybdophyllite structural group.
Key properties: Mohs hardness 3; specific gravity 5.52; White streak; Adamantine luster; optically biaxial.
IMA symbol Bv, IMA status: approved, named in 2006.
Found in manganese ore.
It is found associated with Calcite, barytocalcite, brucite, cerussite, hausmаnnite, braunite.
The mineral was named to honor Russian mineralogist Sergey Nikolaevich Britvin (b. 1965).