• Columbite
  • Columbite
Gallery

Columbite

$950.00   €895  £770.00 approx.  

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

ID: CC20080
A magnificent 5.7 x 5.5 x 1.6 cm tabular crystal of Columbite, an ore of niobium, from the Minas Gerais mining district of Brazil. This crystal is not attached to any matrix and although some faces and edges are incomplete, the crystal is largely fully intact with well-defined black prism faces and a metallic, slightly waxy lustre. Columbite often occurs in granitic pegmatites and forms a series between end members Columbite-(Fe) and Columbite-(Mn); this fine specimen is of undetermined Fe-Mn content, so is more conventionally labelled Columbite. A superb example of this relatively rare species!

Details

Dimensions
5.9 × 6.0 × 1.7 cm
Categories
Oxides and Hydroxides
Locality
Minas Gerais, Brazil, South America

Minerals on Specimen

Minerals on specimen
Columbite

Related Mineral Specimens

Lepidolite with Quartz
$4,500
 Minas Gerais, Brazil, South America
Beautiful candy to lilac pink platy crystals of diamond shaped Lepidolite in a stacked habit with...
Columbite
$1,600
 Minas Gerais, Brazil, South America
Columbite, an iron-niobium oxide, in this rather gorgeous miniature forms a blocky prism with...
Quartz
$950
 Minas Gerais, Brazil, South America
A well formed lustrous crystal of Quartz measuring to 8cm has an orang-brown coloured phantom...
Tourmaline with Quartz
$750
 Minas Gerais, Brazil, South America
This mouth-watering specimen of rich limey-leaf-green Tourmaline with black terminations and...