Columbite (mineral group)
Columbite
A variety of Minerals
What is Columbite (mineral group)?
Columbite (mineral group) is a family of dark-colored minerals that are mined as a source of the element Niobium. Niobium is itself an important metal used to strengthen alloys - stainless steel, for instance, usually contains small amounts of Niobium. Certain specialist alloys used in aerospace construction also utilize Niobium.
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Columbite (mineral group) Localities Map
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Key Characteristics
Characteristics of Columbite (mineral group)
Columbite contains varying amounts of thorium and uranium, which makes it radioactive to various degrees.
Health & Safety Information
- ⚠️Harm Reason: Columbite (mineral group) is toxic due to its Radioactivity.
- ⚠️How to prevent the risks of Columbite (mineral group)?
Quick Facts
Physical Properties
- Color
- Black to brownish black
- Hardness (Mohs)
- 6
- Density
- 5.2 - 6.65 g/cm³
- Streak
- Blackish brown
- Luster
- Sub-metallic
- Crystal System
- Orthorhombic
Chemical Properties
- Chemical Formula
- (Fe, Mn)(Nb, Ta)2O6
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