Azurite
Deeply blue X of azurite, 2.5x1.5 cm wide, on matrix. As it is possible to see from the 2nd photo, it has some gemmy parts
2.7x4.5cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.1374

2nd photo

Calcite
White XX partially covered by a thin coating of duftite (it is worth to remember that it took its name - in 1920 - from G. Duft, general manager of the Tsumeb Mine)
8x6cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.831

2nd photo
3rd photo

Calcite
Group of XX up tp 2.8cm long, white, with a vivid red iron oxides coating
8.5x6cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.661

2nd photo

Calcite
Orange XX; the scalenohedrons are strongly rounded
7x4.5cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.663

2nd photo

Cerussite
Cluster of pink cerussite XX, prismatic and striated, in "V" formation, up to 5 cm tall. This twinned formation is popular, especially from this famous mine
5x5cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.339

Cerussite
Twinned XX of cerussite in "V" formation, without matrix
7x6.7cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.337

Dioptase
XX of dioptase up to 0.2 cm long, on calcite. Some of them are transparent
2.5x4cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.1359

Another photo: a gemmy X
Another photo: bigger view

Smithsonite
Rhombohedral XX with edge up to 0.4cm, on matrix. The pink color is quite strong
6.5x4.5xcm
Tsumeb mine, Tsumeb. Namibia
Specimen n.652

2nd photo: another view
3rd photo

Smithsonite
Small XX (up to 0.2cm) with a fine color: on a green base, they are transparent, pale-yellow, with some reddish inclusions
6.7x6cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.832

2nd photo

Smithsonite
Large and well terminated XX of brown smithsonite, up to 1.7 cm long
12x9cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.1286

Another photo: bigger view
Another photo: wider view

Smithsonite
Gray pale-yellow XX with edge up to 0.9cm, on matrix
9x6cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.653

2nd photo

Smithsonite
White semitransparent XX, edge up to 1.2cm 
8.5x5xcm
Tsumeb mine, Tsumeb. Namibia
Specimen n.654

2nd photo

Smithsonite
Group of rhombohedrons, with the typical curved faces. The XX, up to 1.7cm long, are covered by a grey coating (galena?), under it smithsonite is pale gray
10x7cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.656

Smithsonite
Pink-to-orange rhombohedral XX, rounded, up to 0.4cm 
8x4cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.650

Smithsonite
Rounded rhombohedrons, pale pink, up to 0.5cm, on gray calcite
6.5x7cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.651

2nd photo

Smithsonite
Small rhombohedrons of Cu-rich smithsonite, with gray calcite
8x8.5cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.649

Smithsonite
Matrix covered by pink XX up to 0.4cm long
11x9cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.655

Another photo: a bigger view
Another photo: entire piece

Wulfenite
Orange tabular XX, edge up to 1.1cm, on microcrystalline smithsonite matrix. It is very thin and with a remarkable transparence; it seems to have phantom pictures. There are other XX as you can see from the bigger photo; there is also a combination of two parallel attached XX (third photo)
9.5x5cm
Tsumeb mine, Tsumeb. Namibia
Specimen n.662

Another photo: entire piece
Another photo: bigger view
Another photo: a detail