Elongated grain of rare niobium oxide with colored tourmalines and casting mica.
The grain of columbite is 4 mm in size.
Localities, Czech Republic, Pegmatites, Mineral Classification, Oxides, Silicates, Size, Medium
Columbite, verdelite, rubellite, lepidolite
€12
Availability: In stock
Location: Chvalovice; Czech Republic
Dimension: 50 × 54 × 78 mm
Weight: 179 g
