Tsumeb Mine (Tsumcorp Mine), Tsumeb, Oshikoto Region, Namibia

PbCO₃  

Crystal System: orthorhombic
Colour: colourless, white, gray, blue or green
Lustre: adamantine, vitreous, resinous, pearly, dull, earthy
Habitus: tabular, rarely acicular.
Fracture: conchoidal
Hardness: 3 - 3½
Density: 6.558 g/cm³ 
Origin and geological occurrence: cerussite is a common weathering product usually occurring in the oxidized portion of lead deposits, where it may represent an important ore mineral.

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Samples:

5.10 Cerussite Intergrowth of white prismatic crystals with minor “limonite”. #carbonates