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Arsenate

Lombardoite

Ba₂Mn³⁺(AsO₄)₂(OH)
Crystal systemMonoclinic
ClassArsenate
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Lombardoite specimen

Brownish red crystals of the extremely rare new mineral lombardoite (IMA 2016-058) from the type and only known locality worldwide: Valletta Mine, Cuneo Province, Piedmont, Italy. Analyzed specimen. — Photo: David Hospital · CC BY-SA 4.0

Lombardoite

Lombardoite is an IMA-recognized mineral species in the arsenate class, with the chemical formula Ba₂Mn³⁺(AsO₄)₂(OH).

It crystallizes in the monoclinic crystal system (space group P2_1/m). It is a member of the Brackebuschite structural group.

IMA symbol Lmb, IMA status: approved, named in 2016.

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 L minerals or help write this entry.