|
Ferrotantalite Mineral Data + |
General Ferrotantalite Information |
|||
| Fe++Ta2O6 | |||
| Molecular Weight = 513.74 gm | |||
| Tantalum 70.44 % Ta 86.01 % Ta2O5 | |||
| Iron 10.87 % Fe 13.98 % FeO | |||
| Oxygen 18.69 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Fe2+Ta2O6 | |||
| Accessory mineral in granite pegmatites. | |||
| Approved IMA 1989 | |||
| Upper Bear Gulch, Lawrence Co, South Dakota, USA Link to MinDat.org Location Data. | |||
| Named for the FERROus iron and from the Greek, Tantalos = father of Niobe. | |||
| Coltan | |||
| Columbite-Tantalite | |||
| Tantalite | |||
Ferrotantalite Image | |||
|
|
|
||
|
|
|
||
Ferrotantalite Crystallography |
|||
| a:b:c =0.4023:1:0.3567 | |||
| a = 5.73, b = 14.24, c = 5.08, Z = 4; V = 414.50 Den(Calc)= 8.23 | |||
| Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pcan | |||
| By Intensity(I/Io): 2.96(1), 3.66(0.5), 1.721(0.2), | |||
Mouse |
|
||
Physical Properties of Ferrotantalite |
|||
| [010] Distinct | |||
| Brownish black, Black. | |||
| 8.2 | |||
| Opaque | |||
| Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. | |||
| 6-6.5 - Orthoclase-Pyrite | |||
| Sub Metallic | |||
| black brown | |||
Optical Properties of Ferrotantalite |
|||
| CI meas= -0.052 (Good) - where the CI = (1-KPDmeas/KC) CI calc= -0.048 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1636,KPDmeas= 0.1642,KC= 0.1562 |
|||
| Biaxial (+), a=2.26, b=2.3-2.4, g=2.43, bire=0.1700 | |||
Calculated Properties of Ferrotantalite |
|||
relectron=7.05 gm/cc |
|||
| Fermion Index = 0.00247 Boson Index = 0.99753 |
|||
PEFerrotantalite = 850.67 barns/electron |
|||
| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Ferrotantalite is Not Radioactive |
|||
Ferrotantalite Classification |
|||
| 8.3.2.1 (8)Multiple Oxides with Nb, Ta, and Ti | |||
| (8.3)where A (B2O6) | |||
| (8.3.2)Dana Group | |||
| IV/D.18-50 IV - Oxides | |||
| IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds) | |||
| IV/D.18 - Columbite series | |||
Other Ferrotantalite Information |
|||
| PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Ferrotantalite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Ferrotantalite using: Visit our Advertisers for Ferrotantalite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals The GeoZone Wrights Rock Shop Translate Ferrotantalite Mineral Data : Ask about Ferrotantalite here : Print or Cut-and-Paste your Ferrotantalite Specimen Label here :
|
|||