- Home
- About
- Diverse
- Pulses
- Dairy
- Seeds
- Drinks
- Oils
- Nuts
- Sea foods
- Organics
- Fruits
- Vegetables
- Barley Bran
- Barley Flour
- Barley Grain
- Bread Mix Stone Ground
- Bread Mix White
- Buck Wheat Flour
- Hulled Millet
- Kernel Cracks
- Stabilised Quick Oats
- Stabilised Rolled Oats
- Sunflower Kernels
- Pressed
- Sunflower Seeds
- Unbleached Cake
- Unbleached Plain
- White French Millet
- Wholegrain Plain
- Wholegrain Self
- Wholegrain Spelt
- Spices
- Sugar
- Frozen Food
- Contact Us
Coltan / Columbite-Tantalite (Fe++Ta2O6)
Coltan / Columbite-Tantalite (Fe++Ta2O6) Specification
Columbite - (Fe) Formula: Fe2+Nb2O6 Colour: Black to brownish black Lustre: Vitreous, Sub-Metallic Hardness: 6 Specific Gravity: 5.2 - 6.65 Crystal System: Orthorhombic
Copyright © 2015 Azean Trade GmbH
Email: [email protected]