Coltan, columbite- tantalite,, ferrotantalita, ferrocolumbite, ferrotantalite, manganocolumbite, manganotantalite, stibiocolumbite, stibiotantalite, Coltan, columbite- tantalite,, ferrotantalita, ferrocolumbite, ferrotantalite, manganocolumbite, manganotantalite, stibiocolumbite, stibiotantalite

Reade Advanced Materials offers:
Coltan / Columbite-Tantalite Powder
Synonyms:
Coltan, columbite- tantalite,, ferrotantalita, ferrocolumbite, ferrotantalite, manganocolumbite, manganotantalite, stibiocolumbite, stibiotantalite
Designations:
Chemical Formula: Fe++Ta2O6
Description:
Columbite-tantalite — coltan for short — is a dull metallic ore found in major quantities in the eastern areas of Congo. When refined, coltan becomes metallic tantalum, a heat-resistant powder that can hold a high electrical charge. These properties make it a vital element in creating capacitors, the electronic elements that control current flow inside miniature circuit boards. Tantalum capacitors are used in almost all cell phones, laptops, pagers and many other electronics. The recent technology boom caused the price of coltan to skyrocket. To the best of our knowledge, the legal mining source for our Coltan is shown below.
Mining Locations Sourced:
1) Upper Bear Gulch, Lawrence
Co., South Dakota, USA,
2) Red Lake,
Ontario,
3)
Etelä-Suomen Lääni, Finland, 4) Urals Region, Russia
4) Newry,
Maine
5) Amelia
County, Virginia
Tantalum 70.44 % Ta 86.01 % Ta2O5 Iron 10.87 % Fe 13.98 % FeO Oxygen 18.69 % O
| Atomic Number | 73 |
| System | Orthorhombic |
| Molecular Weight | 513.74 gm |
| Melting Point (°C) | |
| Boiling Point (°C) | |
| Specific heat @25°C (cal/g-°C) | |
| Strunz ID | 4/D.18-50 |
| Mohs Hardness | 6 to 6.5 |
| Color | Variations of black |
| Specific Gravity | ~ 8.0 |
| Particle Shape | |
| Crystallography |
1) 50 lbs. net bags
2) Bulk bags
Unknown. For further information please call the E.P.A. at 1.202.554.1404
TBA
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