Chalcopyrite
Corroded XX of chalcopyrite on quartz, the bigger X is 1.3x1 cm. This piece comes from a quarry where a quartz vein with sulphides was found in the '80s.
6x4cm
Neve quarry, Masso, Sestri Levante, Genova. Italy
Specimen n.894

2nd photo

Thomsonite
An old piece (probably thomsonite-ca), with two generations: yellow globules up to 0.7cm wide - now impossible to find - and smaller spheres (0.1cm) pale blue to gray. The yellow color is due to other minerals encrustation (I have been told it could be tobermorite or tacharanite...? definitively, I do not know ); nice contrast on the white matrix and an old classic from this locality
8x5.5cm
Rio Pian del Fo, Tiglieto, Genova. Italy
Specimen n.677

Another photo: entire piece

Quartz
Skeletal quartz, with solid and liquid inclusions
5x12.5 cm
Rocchetta Neriva, Imperia. Italy
Specimen n.1356

2nd photo
3rd photo