• Bournonite
  • Bournonite
  • Bournonite


$3,500.00   €2,949  £2,660.00 approx.  

This specimen is priced in US dollars, all other prices are approximate.

ID: CC20006
From the Viboras mine at Machacamarca in Bolivia, an approximately 1 cm thick plate of intermeshed, gunmetal-silver grey Bournonite crystals makes a most striking specimen.  Viboras is a small operating silver mine in the south-west region of central Bolivia and although it does produce various other sulphosalt specimens, it is Bournonite for which is has become well known.  Individual crystals of up to 1.5 cm diameter mesh to produce a flattened face which developed against a former planar surface, e.g. a fracture surface, whereas the opposite face shows individual developed euhedral crystals.  The edges of the specimen display superb characteristic cog-wheel profiles.  Mounted vertically on a clear acrylic base, this is a beautiful Bolivian Bournonite.


6.3 × 3.7 × 1.4 cm
Sulphides, Sulphosalts and Arsenides
Viboras Mine, Machacamarca, Machacamarca District, Cornelio Saavedra Province, Potosí Department, Bolivia

Minerals on Specimen

Minerals on specimen

Related Mineral Specimens

Bournonite with Quartz
 Herodsfoot Mine, Lanreath, Cornwall, England, Europe
A terrific specimen of Bournonite finely displaying its characteristic “cog wheel” crystals set...
Bournonite with Quartz on Chalcopyrite
 Baia Sprie, Maramures Co, Romania, Europe
Bright metallic grey crystals of Bournonite measuring to 9mm displaying some cogwheel twinning are...
Bournite with Pyrite
 Baia Sprie, Maramures Co, Romania, Europe
Fine well-formed characteristic crystals of Bournonite measuring to 9mm are neatly clustered over a...
Bournonite on Siderite
 Pribram, Bohemia, Czech Republic, Europe
A single well formed bright metallic silver-grey tabular crystal of Bournonite sits on edge in a...