Baryte  
XX up to 2cm wide, with cinnabar inclusions and some marcasite grains
10x7cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.770

Bornite
Blocky and malformed XX with rough curved faces, on and in calcite semi transparent scalenohedrons 
14x5cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.1072

Another photo: a bigger view

Calcite
Large X , 15 cm long, on a calcite smaller XX matrix. Calcite has been posted on a pale blue barite XX matrix, as it is possible to see in the 2nd photo
16x16cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.1290

Another photo: a bigger view
Another photo: a detail

Calcite
Scalenohedral twinning, part of a group of XX up to 11 cm long. Calcite is brown for iron impurities and surfaces of XX are covered by small other XX. From this famous mine, closed in 1997
22x13cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.634

Another photo: a bigger view

Calcite
Scalenohedrons of yellowish calcite XX with 2ns generation rhombs of white calcite
12x10cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.1190

Another photo: a detail

Calcite
A lot of XX, not well defined, up to 3cm long, scattered on limestone matrix
11.5x11cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.602

Calcite
Group of XX up to 5cm long
8.5x6cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.599

Calcite
Calcite XX up to 3.8 cm long (see the 3rd photo), with pale pink baryte, on a dolomite (ankerite?) matrix. It has a notably aesthetic effect
11x18cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.207

Another photo: bigger photo
Another photo: calcite XX
Another photo: view on barite

Calcite
Elongated XX of calcite
12x12cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.954

Calcite
Flowers of calcite, a nice typical formation from this mine
10x11cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.1361

2nd photo

Devilline
Microcrystalline devilline on tetrahedrite XX 0.6cm long. The matrix is made of dolomite XX that have light pink reflections for cinnabar inclusions
10x8cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.1059

Another photo: a bigger and different view

Smithsonite
Smithsonite after intergrown calcite XX. I find this piece interesting because the calcite XX are empty and the 2nd mineral has replaced the external part of the calcite XX with the rhombs, typical for smithsonite. The smithsonite XX are small (approx 0,1cm long) but well defined as you can see from the 2nd photo. It is classic piece from this locality
8.5x10cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.752

Another photo: a detail of this piece

Sphalerite
Greenish XX of sphalerite, the biggest is 1cm wide. In a vug of pink dolomite
8x10cm
S.Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.1153

Another photo: a bigger view

Stephanite
Group of XX, 0.1-0.2cm long, with metallic luster, on dolomite matrix. It is a rare silver antimony sulfide mineral
4x5cm
S. Giovanni mine, Iglesias, Carbonia-Iglesias. Italy
Specimen n.711

Another photo: entire specimen