Niobocarbide Mineral Data + Say NIOBOCARBIDE

Dan Weinrich Fine Minerals
[Fine Minerals] [What's New] [Mineral Galleries] [My Collection] [Mineral Auctions]
Dan Weinrich Fine Minerals
Full-time professional mineral dealer with over 31 years experience in mineral collecting
And 15 years selling mineral specimens on the internet and at major mineral shows

General Niobocarbide Information

Help on Chemical  Formula: Chemical Formula: (Nb,Ta)C
Help on Composition: Composition: Molecular Weight = 147.18 gm
   Tantalum  59.01 %  Ta
   Niobium   32.83 %  Nb
   Carbon     8.16 %  C
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Nb0.52Ta0.48C
Help on Environment: Environment: In platinum placer concentrates. The niobium-dominant analogue of tantalcarbide.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Nihnetagilsky, near Solovjeva mountain (formerly Aurorinsky mine) and Baranchinsky massif near the Actai River, Middle Urals, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its composition of Nb and C.
Help on Synonym: Synonym: ICSD 77217
  IMA1995-035
  PDF 51-1421
 

Niobocarbide Image

Click Here for Larger Niobocarbide Image in a New Browser Window Images:
Click Here for Larger Niobocarbide Image

Niobocarbide

Comments: Small metallic grain of niobocarbide.
Location: Nizhne-Tagil'skoye (Mednorudyanskoye) Cu Deposit, Nizhnii Tagil, Sverdlovskaya Oblast', Urals Region, Russia. Scale: Grain size 0.3 mm.
© Thomas Witzke / Abraxas-Verlag

Niobocarbide Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 4.45, Z = 4; V = 88.12 Den(Calc)= 11.09
Help on Crystal System: Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.56(1), 2.22(0.9), 1.574(0.8),
Click Here for Large Niobocarbide Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate

Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above


Wyckoff R W G , Crystal Structures , 1 (1963) p.85-237, Second edition. Interscience Publishers, New York, New York, rocksalt structure

 

Physical Properties of Niobocarbide

Help on Color: Color: Yellow, Straw yellow.
Help on Density: Density: 10.25
Help on Diaphaniety: Diaphaniety: Opaque
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Inclusions - Generally found as inclusions in other minerals.
Help on Hardness: Hardness: 8 - Topaz
Help on Luster: Luster: Metallic
 

Optical Properties of Niobocarbide

Help on RL Color: RL Color: Yellowish to rose cream.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Niobocarbide in Air
λ R  ∑ R(λ) 
 460 nm   31.80   
 540 nm   38.50 
 580 nm   45.10 
 660 nm   51.50 
Calculated Relative Intensity Colors of Niobocarbide in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 270% 280%
R                        
 

Calculated Properties of Niobocarbide

Help on Electron Density: Electron Density:

relectron=9.40 gm/cc
note: rNiobocarbide =11.1 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00096
Boson Index = 0.99904
Help on Photoelectric: Photoelectric:

PENiobocarbide = 771.77 barns/electron
U=PENiobocarbide x relectron=7,252.90 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Niobocarbide is Not Radioactive

 

Niobocarbide Classification

Help on  Dana Class: Dana Class: 1.1.19.3 (1)Native Elements
  (1.1)with metallic elements other than the platinum group
  (1.1.19)Dana Group
 
1.1.19.1 Osbornite TiN F m3m 4/m 3 2/m
 
1.1.19.2 Khamrabaevite (Ti,V,Fe)C F m3m 4/m 3 2/m
 
1.1.19.3 Niobocarbide ! (Nb,Ta)C F m3m 4/m 3 2/m
 
1.1.19.4 Tantalcarbide! TaC F m3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: I/A.09-55 I - Elements
  I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides
  I/A.09 - Honquiite-Tantalcarbide series
 
I/A.09-10 Hongquiite* TiO F m3m 4/m 3 2/m
 
I/A.09-20 Khamrabaevite (Ti,V,Fe)C F m3m 4/m 3 2/m
 
I/A.09-30 Tongbaite Cr3C2 P nma 2/m 2/m 2/m
 
I/A.09-35 Isovite! (Cr,Fe)23C6 F m3m 4/m 3 2/m
 
I/A.09-40 Haxonite (Fe,Ni)23C6 F m3m 4/m 3 2/m
 
I/A.09-50 Cohenite (Fe,Ni,Co)3C Pbnm 2/m 2/m 2/m
 
I/A.09-55 Niobocarbide (Nb,Ta)C F m3m 4/m 3 2/m
 
I/A.09-60 Tantalcarbide! TaC F m3m 4/m 3 2/m
 

Other Niobocarbide Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.83,p1117,1998) OPTIC PROP.(MinRec, v 29, p 475)
Help on See Also: See Also: Links to other databases for Niobocarbide :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

Search for Niobocarbide using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Niobocarbide :
AA Mineral Specimens
B and L Minerals
Crystal Vaults
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Niobocarbide Mineral Data :

Ask about Niobocarbide here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Niobocarbide Specimen Label here :

Niobocarbide

(Nb,Ta)C
Dana No: 1.1.19.3 Strunz No: I/A.09-55
Locality:

 

Notes:

 

 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links