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Formula: BiMo5+2.8O8(OH)
Oxide of bismuth and molybdenum
Crystal System: Triclinic
Specific gravity: 5.720 calculated
Colour: Pale yellow
Environments
Localities
At the type locality, Punta de Su Seinargiu, Sarroch, Metropolitan City of Cagliari, Sardinia, Italy, mambertiite
was identified in small vugs of quartz veins. It occurs as pale yellow tabular
crystals, up to 1 mm in length and few microns thick, with adamantine lustre. It is a
secondary oxidation product associated with
ferrimolybdite, muscovite,
quartz, sardignaite and
wulfenite
(EJM 27.3.405-415).
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