Fergusonite-(Y) Mineral Data

Fergusonite-(Y) Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About



[On-Line Catalogue] [On-Line Auctions] [eBay] [Contact Us] [Policies]
We specialize in fine European and Asian Mineral Specimens
Heliodor is based in Prague, Czech Republic


General Fergusonite-(Y) Information

Help on Chemical Formula: Chemical Formula: YNbO4
Help on Composition: Composition: Molecular Weight = 245.81 gm
   Yttrium  36.17 %  Y    45.93 % Y2O3
   Niobium  37.80 %  Nb   54.07 % Nb2O5
   Oxygen   26.04 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: YNbO4
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1827
Help on Locality: Locality: Qeqertaussaq, Julienhaab district, Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Robert Ferguson (1767-1840), Scottish advocate, politician, and mineralogist.
Help on Name Pronunciation: Name Pronunciation: Fergusonite-(Y) + Pronunciation Say FERGUSONITE-(Y)
Help on Synonym: Synonym: ICSD 40346
  Kochelite - mixture of fergusonite-(Y) and zircon
  PDF 9-443
 

Fergusonite-(Y) Image

Click Here for Larger Fergusonite-(Y) Image in a New Browser Window Images:
Click Here for Larger Fergusonite-(Y) Image

Fergusonite-(Y)

Comments: Heavy mass of fergusonite-(Y) with one face polished flat to show the solid interior. Radioactive.
Location: Ambatofotsy, Betafo - Antsirabé region, Antananarivo Province, Madagascar. Scale: 6x2.5x1.5 cm.
© John Betts - Fine Minerals
Click Here for Larger Fergusonite-(Y) Image in a New Browser Window Images:
Click Here for Larger Fergusonite-(Y) Image

Fergusonite-(Y)   Plumbopyrochlore

Comments: Brown resinous fergusonite-(Y) (as per communication with Pavel M. Kartashov) with yellowish plumbopyrochlore.
Location: Ploskaya Mountain, Keivy Region, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fergusonite-(Y) Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.46511
Help on Cell Dimensions: Cell Dimensions: a = 7.74, c = 11.34, Z = 8; V = 679.35 Den(Calc)= 4.81
Help on Crystal System: Crystal System: Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: I 41/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.12(1), 2.96(0.9), 1.901(0.5),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: ( 1 1 1) ( 2 3 1) ( 2 3 0) ( 0 0 1)

Warning: this large pop-up is very compute intensive and may not work well with some computers.
Click Here for Large Fergusonite-(Y) 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


Komkov A I , Soviet Physics Crystallography , 4 (1959) p.796-800, The structure of natural fergusonite, and of a polymorphic modification, Locality: Ural Mountains, Russia, Sample: annealed at T = 1000 C for t = 15 min

 

Physical Properties of Fergusonite-(Y)

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Black, Black, Brown, Gray, Yellow.
Help on Density: Density: 4.3 - 5.8, Average = 5.05
Help on Diaphaneity: Diaphaneity: Subtranslucent to opaque
Help on Fracture: Fracture: Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.
Help on Habit: Habit: Metamict - Mineral originally crystalline, now amorphous due to radiation damage.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 5.5-6 - Knife Blade-Orthoclase
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Sub Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: brown
 

Optical Properties of Fergusonite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2328,KPDmeas= 0.2218,KC= 0.223
Ncalc = 1.96 - 2.29
Help on Optical Data: Optical Data: Isotropic, n=2.05-2.19.
 

Calculated Properties of Fergusonite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.60 gm/cc
note: Specific Gravity of Fergusonite-(Y) =5.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.00012497
Boson Index = 0.99987503
Help on Photoelectric: Photoelectric: PEFergusonite-(Y) = 105.20 barns/electron
U=PEFergusonite-(Y) x rElectron Density= 484.10 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Fergusonite-(Y) is Not Radioactive
 

Fergusonite-(Y) Classification
Help on Dana Class: Dana Class: 08.01.01.01 (08)Multiple Oxides with Nb, Ta, and Ti
  (08.01)where A BO4
  (08.01.01)Fergusonite Group (Tetragonal)
 
08.01.01.01 Fergusonite-(Y) YNbO4 I 41/a 4/m
 
08.01.01.02 Formanite-(Y) YTaO4 I 41/a 4/m
 
08.01.01.03 Fergusonite-(Ce)* (Ce,La,Y)NbO4 I 41/a 4/m
 
08.01.01.04 Fergusonite-(Nd)* (Nd,Ce)(Nb,Ti)O4 I 41/a 4/m
Help on Strunz Class: Strunz Class: 07.GA.05 07 - SULFATES (SELENATES, TELLURATES)
  07.G - Molybdates, Wolframates and Niobates
  07.GA -Without additional anions or H2O
 
07.GA.05 Fergusonite-(Ce)* (Ce,La,Y)NbO4 I 41/a 4/m
 
07.GA.05 Fergusonite-(Nd)* (Nd,Ce)(Nb,Ti)O4 I 41/a 4/m
 
07.GA.05 Fergusonite-(Y) YNbO4 I 41/a 4/m
 
07.GA.05 Stolzite PbWO4 I 41/a 4/m
 
07.GA.05 Scheelite CaWO4 I 41/a 4/m
 
07.GA.05 Powellite CaMoO4 I 41/a 4/m
 
07.GA.05 Wulfenite PbMoO4 I 41/a 4/m
 

Other Fergusonite-(Y) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Fergusonite-(Y) :
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 (UofA)
8 - MinDAT
9 - MinMax(Deutsch)
10 - MinMax(English)
11 - Mineralienatlas (Deutsch)
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

Search for Fergusonite-(Y) using:

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

Visit our Advertisers for Fergusonite-(Y) :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Fergusonite-(Y) Mineral Data :

Ask about Fergusonite-(Y) 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 Fergusonite-(Y) Specimen Label here :

Fergusonite-(Y)

YNbO4
Dana No: 08.01.01.01 Strunz No: 07.GA.05
Locality:

 

Notes: