Mineralogy Database

Nioboaeschynite-(Nd) Mineral Data

Search Webmineral :
  
Advertisment

General Nioboaeschynite-(Nd) Information

Help on Chemical  Formula: Chemical Formula: (Nd,Ce)(Nb,Ti)2(O,OH)6
Help on Composition: Composition: Molecular Weight = 414.15 gm
   Cerium     13.53 %  Ce   15.85 % Ce2O3
   Titanium    2.89 %  Ti    4.82 % TiO2
   Niobium    39.26 %  Nb   56.16 % Nb2O5
   Hydrogen    0.24 %  H     2.17 % H2O
   Neodymium  20.90 %  Nd   24.37 % Nd2O3
   Oxygen     23.18 %  O
             ______        ______ 
             100.00 %      103.38 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Nd0.6Ce0.4Nb1.75Ti0.25O5(OH)
Help on IMA Status: IMA Status: Approved IMA 1997 (Dana # Added)
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its composition and from the Greek for "shame," in allusion to the inability of chemists, at the time of its discovery, to separate some of its constituents.
Help on Synonym: Synonym: Niobo-aeschynite-(Nd) - Renamed Nioboaeschynite-(Nd) by Mineralogical Record, v39 (2008), p131
 

Nioboaeschynite-(Nd) Crystallography

Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbnm
 

Physical Properties of Nioboaeschynite-(Nd)

Help on Color: Color: Black.
Help on Diaphaneity: Diaphaneity: Subtranslucent
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luster: Luster: Adamantine
 

Optical Properties of Nioboaeschynite-(Nd)

Help on Optical Data: Optical Data:
 

Calculated Properties of Nioboaeschynite-(Nd)

Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PENioboaeschynite-(Nd) = 254.53 barns/electron
U=PENioboaeschynite-(Nd) x relectron= . barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 32,889.57 (Gamma Ray American Petroleum Institute Units)
Concentration of Nioboaeschynite-(Nd) per GRapi unit = 30.40 (PPM)

Nioboaeschynite-(Nd) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 924.81 ±231.20 grams of pure Nioboaeschynite-(Nd) .

Estimated Radioactivity from Nioboaeschynite-(Nd) - weak
Specimen
Size
Weight/Volume
(Sphere)
*
Calculated
Activity
Bequerols
(Bq)
Calculated
Activity
Curies (Ci)
Estimated
Activity
GR(api)
Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm 771,221 2.08E-05 32,889.57 10.81
100 gm 77,122 2.08E-06 3,288.96 1.08
10 gm 7,712 2.08E-07 328.90 0.11
1 gm 771 2.08E-08 32.89 0.01
0.1 gm 77 2.08E-09 3.29 0.00
0.01 gm 8 2.08E-10 0.33 0.00
0.001 gm 1 2.08E-11 0.03 0.00

Weight of pure Nioboaeschynite-(Nd) in grams (gm).*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 1.72 % Th) From Sum REE Elements (34.43 % REE)
 

Nioboaeschynite-(Nd) Classification

Help on  Dana Class: Dana Class: 08.03.06.06 (08)Multiple Oxides with Nb, Ta, and Ti
  (08.03)where A (B2O6)
  (08.03.06)Aeschynite group
 
08.03.06.01 Aeschynite-(Ce) (Ce,Ca,Fe)(Ti,Nb)2(O,OH)6 Pmnb 2/m 2/m 2/m
 
08.03.06.02 Nioboaeschynite-(Ce) (Ce,Ca)(Nb,Ti)2(O,OH)6 Pbnm 2/m 2/m 2/m
 
08.03.06.03 Aeschynite-(Y) (Y,Ca,Fe)(Ti,Nb)2(O,OH)6 Pbnm 2/m 2/m 2/m
 
08.03.06.04 Tantalaeschynite-(Y) (Y,Ce,Ca)(Ta,Ti,Nb)2O6 Pbnm 2/m 2/m 2/m
 
08.03.06.05 Aeschynite-(Nd) (Nd,Ce)(Ti,Nb)2(O,OH)6 Pmnb ? 2/m 2/m 2/m
 
08.03.06.06 Nioboaeschynite-(Nd)! (Nd,Ce)(Nb,Ti)2(O,OH)6 Pbnm 2/m 2/m 2/m
 
08.03.06.07 Nioboaeschynite-(Y)! [(Y,REE),Ca,Th,Fe](Nb,Ti,Ta)2(O,OH)6 Pbnm 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.DF.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DF -With large (� medium-sized) cations; dimers and trimers of edge-sharing octahedra
 
04.DF.05 Aeschynite-(Ce) (Ce,Ca,Fe)(Ti,Nb)2(O,OH)6 Pmnb 2/m 2/m 2/m
 
04.DF.05 Aeschynite-(Nd) (Nd,Ce)(Ti,Nb)2(O,OH)6 Pmnb ? 2/m 2/m 2/m
 
04.DF.05 Aeschynite-(Y) (Y,Ca,Fe)(Ti,Nb)2(O,OH)6 Pbnm 2/m 2/m 2/m
 
04.DF.05 Nioboaeschynite-(Ce) (Ce,Ca)(Nb,Ti)2(O,OH)6 Pbnm 2/m 2/m 2/m
 
04.DF.05 Nioboaeschynite-(Nd)! (Nd,Ce)(Nb,Ti)2(O,OH)6 Pbnm 2/m 2/m 2/m
 
04.DF.05 Rynersonite Ca(Ta,Nb)2O6 Pmnb 2/m 2/m 2/m
 
04.DF.05 Tantalaeschynite-(Y) (Y,Ce,Ca)(Ta,Ti,Nb)2O6 Pbnm 2/m 2/m 2/m
 
04.DF.05 Vigezzite (Ca,Ce)(Nb,Ta,Ti)2O6 Pmnb 2/m 2/m 2/m
 
04.DF.05 Nioboaeschynite-(Y)! [(Y,REE),Ca,Th,Fe](Nb,Ti,Ta)2(O,OH)6 Pbnm 2/m 2/m 2/m
 

Other Nioboaeschynite-(Nd) Information

Help on References: References: NAME( Dana8)
Help on See Also: See Also: Links to other databases for Nioboaeschynite-(Nd) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Nioboaeschynite-(Nd) using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Nioboaeschynite-(Nd) :

Ask about Nioboaeschynite-(Nd) 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 Español

Print or Cut-and-Paste your Nioboaeschynite-(Nd) Specimen Label here :

Nioboaeschynite-(Nd)

(Nd,Ce)(Nb,Ti)2(O,OH)6
Dana No: 08.03.06.06 Strunz No: 04.DF.05
Locality:

 

Notes:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.