Yftisite-(Y) Mineral Data + Say YFTISITE-(Y)


[Express Minerals] [Minerals for Sale] [About Us] [En Espa�±ol] [Mineral Gallery]
Fabre Minerals - Europe's first Internet mineral dealer, on the web since 1996

General Yftisite-(Y) Information
Help on Chemical Formula: Chemical Formula: (Y,Dy,Er)4(Ti,Sn)O(SiO4)2(F,OH)6
Help on Composition: Composition: Molecular Weight = 753.13 gm
   Dysprosium   6.47 %  Dy    7.43 % Dy2O3
   Yttrium     41.32 %  Y    52.47 % Y2O3
   Erbium       4.44 %  Er    5.08 % Er2O3
   Titanium     4.77 %  Ti    7.95 % TiO2
   Silicon      7.46 %  Si   15.96 % SiO2
   Tin          3.94 %  Sn    5.00 % SnO2
   Hydrogen     0.27 %  H     2.39 % H2O
   Oxygen      21.24 %  O
   Fluorine    10.09 %  F    10.09 % F
                 -   %  F    -4.25 % -O=F2
              ______        ______ 
              100.00 %      102.12 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Y3.5Dy0.3Er0.2Ti0.75Sn0.25(SiO4)2F4(OH)2
Help on Environment: Environment: Silicified alkalic granite near a gabbro-anothosite contact. Approved 1965, discredited 1987 as incompletly characterized.
Help on IMA Status: IMA Status: Discredited IMA 1987
Help on Locality: Locality: Kazakhstan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in 1965 for the elemental makeup, (Y, F, Ti, Si).
Help on Synonym: Synonym: Discredited IMA 1997
  ICSD 20003
  PDF 33-1462
 

Search for Yftisite-(Y) Images

Click Here To Search Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.
  

Yftisite-(Y) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.4068:1:0.6628
Help on Cell Dimensions: Cell Dimensions: a = 14.949, b = 10.626, c = 7.043, Z = 4; V = 1,118.77 Den(Calc)= 4.47
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C mcm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.766(1), 2.667(1), 3.099(1),
Click Here for Large Yftisite-(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


Balko V P , Bakakin V V , Zhurnal Strukturnoi Khimii , 16 (1975) p.837-842, Crystal-structure of natural yttrium and rare-earth fluorotitano-silicate, (Y,Ree)4(F,OH)6TiO[SiO4]2 (yftisite)

 

Physical Properties of Yftisite-(Y)

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow.
Help on Density: Density: 3.96
Help on Diaphaniety: Diaphaniety: Transparent
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Vitreous - Greasy
 

Optical Properties of Yftisite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.056 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.163 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.157,KPDmeas= 0.1773,KC= 0.1877
Help on Optical Data: Optical Data: Biaxial (-), a=1.69, b=1.705, g=1.711, bire=0.0210, 2V(Calc)=64, 2V(Meas)=large. Dispersion r > v distinct.
Help on Pleochroism (x): Pleochroism (x): anomalous blue.
Help on Pleochroism (y): Pleochroism (y): anomalous blue.
Help on Pleochroism (z): Pleochroism (z): anomalous blue.
 

Calculated Properties of Yftisite-(Y)

Help on Electron Density: Electron Density:

relectron=3.63 gm/cc
note: rYftisite-(Y) =3.96 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.05484
Boson Index = 0.94516
Help on Photoelectric: Photoelectric:

PEYftisite-(Y) = 155.92 barns/electron
U=PEYftisite-(Y) x relectron= 565.50 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 10,663.23 (Gamma Ray American Petroleum Institute Units)

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

Estimated Radioactivity from Yftisite-(Y) - 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 / 7.84 cm 244,488 6.61E-06 10,663.23 3.51
100 gm / 3.64 cm 24,449 6.61E-07 1,066.32 0.35
10 gm / 1.69 cm 2,445 6.61E-08 106.63 0.04
1 gm / 7.84 mm 244 6.61E-09 10.66 0.00
0.1 gm / 3.64 mm 24 6.61E-10 1.07 0.00
0.01 gm / 1.69 mm 2 6.61E-11 0.11 0.00
0.001 gm / 0.78 mm 0 6.61E-12 0.01 0.00

Weight of pure Yftisite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.96 gm/cc.*
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 ( 0.55 % Th) From Sum REE Elements (10.91 % REE)
 

Yftisite-(Y) Classification
Help on Dana Class: Dana Class: 52.4.4.3 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.4)with cations in [6] and/or > [6] coordination
  (52.4.4)Natisite - Yftisite group
 
52.4.4.1 Natisite Na2(TiO)SiO4 P 4/nmm 4/m 2/m 2/m
 
52.4.4.2 Paranatisite Na2[TiO(SiO4)] P mc21 mm2
 
52.4.4.3 Yftisite-(Y) ? (Y,Dy,Er)4(Ti,Sn)O(SiO4)2(F,OH)6 C mcm 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: VIII/B.14-10 VIII - Silicates
  VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cationes with coordinationnumber between [8] and [12]
  VIII/B.14 - Yftisite-(Y) ? series
 
VIII/B.14-10 Yftisite-(Y) (Y,Dy,Er)4(Ti,Sn)O(SiO4)2(F,OH)6 C mcm 2/m 2/m 2/m
 

Other Yftisite-(Y) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Yftisite-(Y) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

Search for Yftisite-(Y) 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 Yftisite-(Y) :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Yftisite-(Y) Mineral Data :

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

Yftisite-(Y)

(Y,Dy,Er)4(Ti,Sn)O(SiO4)2(F,OH)6
Dana No: 52.4.4.3 Strunz No: VIII/B.14-10
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