FormulaPbCO3
OriginTsumeb (Namibia) 
Description transparent Cerussite
Classification (Lapis) Carbonates
Crystal SystemOrthorhombic
Hardness3,0 – 3,5
ColourColorless, white, pale yellow, smoky to dark gray, black with inclusions; colorless in transmitted light
StreakWhite
Luminescence 
Lustrevitreous 
Transparency (Opacity)Transparent to translucent
CleavageGood
FractureConchoidal
Magnetismnot magnetic
Geological SettingCommon in the oxidized zone of lead deposits
Specific Gravity 6,55 g/cm3