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RM3622   Chalcopyrite and hialine quartz
CuFeS2
  -  0.

Idiomorphic chalcopyrite crystal of considerable size, with defined faces and edges. Some show stepped growth. It is disposed very aerial on a matrix formed by transparent, brilliant, and elongated hyaline quartz crystals. It belongs from the Franco Betta collection (Torino, Italia).

Size: 6 x 4.1 x 4 cm.
Main crystal: 2 cm.
Excol. Franco Betta (Torino, Italia).
150 €
RM3636   Quartz, pyrite, chalcopyrite and hematites
SiO₂
  -  4. Oxides and hydroxides

Exceptional quartz specimen, with elongated prisms forming divergent, transparent to translucent aggregates. It has a slightly reddish hue due to the presence of hematite speckles the crystals. It is accompanied by small crystals of pyrite and chalcopyrite. A display specimen from this classic Peruvian locality.

Size: 15 x 8 x 7.7 cm.
Main crystal: 3.9 cm.
Found in ±2010.
470 €
RM3635   Galena, quartz and sphalerite
PbS
  -  2. Sulfides and sulfosalts

An interesting specimen that shows a matrix covered with clear hyaline quartz crystals. They are accompanied by faceted galena crystals with cube and octahedron faces and very defined edges. They are also accompanied by more complex but also faceted sphalerite. A specimen worth observing with a medium-power magnifying glass.

Size: 7.5 x 4.4 x 3.6 cm.
Main crystal: 7 mm.
Found in ±2010.
75 €
RM2478   Rhodochrosite and quartz

Groups of aggregates of rhodochrosite crystals, of a delicate pink color, brilliant. They are accompanied by colorless aggregates of small quartz crystals. Very aesthetic.

Size: 5.6 x 4.1 x 2.2 cm.
Found in ca. 1988.
Col. Antonio Trigo (Mataró).
Sold
RM2170   Galena, Chalcopyrite and quartz
PbS
  -  2. Sulfides and sulfosalts

An old specimen of this Peruvian mine that shows a large group of cubic galena crystals, interpenetrated, with its characteristic gray tone. They have stepped growths on the faces and some natural cavities, which give them a differentiated appearance.

Size: 11 x 9 x 6 cm.
Main crystal: 2.0 cm.
Found in 11/1985.
#185 Col. Manchion (Barcelona).
Sold
RM2162   Chalcopyrite with quartz
CuFeS2
  -  0.

Group of chalcopyrite crystals, one of good size, with defined shapes arranged on quartz hyaline crystals. An aesthetic miniature.

Size: 5.2 x 3.5 x 2.5 cm.
Main crystal: 1.6 cm.
Found in ±1987.
#360 Col. Manchion (Barcelona).
Sold