Mineralogy Database

Hingganite-(Yb) Mineral Data

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General Hingganite-(Yb) Information

Help on Chemical  Formula: Chemical Formula: (Yb,Y)2([ ])Be2Si2O8(OH)2
Help on Composition: Composition: Molecular Weight = 453.70 gm
   Yttrium     9.80 %  Y    12.44 % Y2O3
   Ytterbium  38.14 %  Yb   43.43 % Yb2O3
   Beryllium   3.97 %  Be   11.03 % BeO
   Silicon    12.38 %  Si   26.49 % SiO2
   Hydrogen    0.44 %  H     3.97 % H2O
   Oxygen     35.26 %  O
             ______        ______ 
             100.00 %       97.36 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: YbY0.5Be2Si2O8(OH)2
Help on Environment: Environment: Found in an amazonite pegmatite on plumbomicrolite and violet fluorite as a product of very late-stage replacement reactions.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Ploskororskaya, Keivy district, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for it's relationship to hingganite.
Help on Name Pronunciation: Name Pronunciation: Hingganite-(Yb) + Pronunciation Say HINGGANITE-(YB)
Help on Synonym: Synonym: ICSD 20628
  PDF 35-705

Hingganite-(Yb) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.2998:1:0.6231
Help on Cell Dimensions: Cell Dimensions: a = 9.888, b = 7.607, c = 4.74, Z = 2; beta = 90.45° V = 356.52 Den(Calc)= 4.23
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.85(1), 3.13(1), 2.572(0.8),

Physical Properties of Hingganite-(Yb)

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless.
Help on Density: Density: 4.83
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 6-7 - Orthoclase-Quartz
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Hingganite-(Yb)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.042 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.094 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1752,KPDmeas= 0.1534,KC= 0.1601
Ncalc = 1.68 - 1.77
Help on Optical Data: Optical Data: Biaxial (+), a=1.725, b=1.738, g=1.76, bire=0.0350, 2V(Calc)=76, 2V(Meas)=65.

Calculated Properties of Hingganite-(Yb)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.42 gm/cc
note: Specific Gravity of Hingganite-(Yb) =4.83 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.16
Boson Index = 0.84
Help on Photoelectric: Photoelectric: PEHingganite-(Yb) = 383.32 barns/electron
U=PEHingganite-(Yb) x relectron=1,693.54 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 37,212.55 (Gamma Ray American Petroleum Institute Units)
Concentration of Hingganite-(Yb) per GRapi unit = 26.87 (PPM)

Hingganite-(Yb) 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) 817.38 ±204.34 grams of pure Hingganite-(Yb) .

Estimated Radioactivity from Hingganite-(Yb) - weak
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 7.34 cm 854,334 2.31E-05 37,212.55 12.23
100 gm / 3.41 cm 85,433 2.31E-06 3,721.26 1.22
10 gm / 1.58 cm 8,543 2.31E-07 372.13 0.12
1 gm / 7.34 mm 854 2.31E-08 37.21 0.01
0.1 gm / 3.41 mm 85 2.31E-09 3.72 0.00
0.01 gm / 1.58 mm 9 2.31E-10 0.37 0.00
0.001 gm / 0.73 mm 1 2.31E-11 0.04 0.00

Weight of pure Hingganite-(Yb) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.83 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 ( 1.91 % Th) From Sum REE Elements (38.14 % REE)

Hingganite-(Yb) Classification

Help on  Dana Class: Dana Class: 54.02.01a.04 (54)Nesosilicate Borosilicates and Some Beryllosilicates
  (54.02)with B in [4] coordination
  (54.02.01a)Datolite group (Datolite series)
54.02.01a.01 Datolite CaBSiO4(OH) P 21/c 2/m
54.02.01a.02 Hingganite-(Ce) (Ce,Ca)2([],Fe)Be2Si2O8[(OH),O]2 P 21/a 2/m
54.02.01a.03 Hingganite-(Y) Y2([])Be2Si2O8(OH)2 P 21/a 2/m
54.02.01a.04 Hingganite-(Yb) (Yb,Y)2([])Be2Si2O8(OH)2 P 21/a 2/m
54.02.01a.05 Calcybeborosilite-(Y)! (REE,Ca)2[](B,Be)2(SiO4)2(OH,O)2 P 21/a 2/m
Help on  Strunz Class: Strunz Class: 09.AJ.20 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AJ -Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra,
09.AJ.20 Bakerite Ca4B4(BO4)(SiO4)3(OH)3•(H2O) P 21/c 2/m
09.AJ.20 Calcybeborosilite-(Y)! (REE,Ca)2[](B,Be)2(SiO4)2(OH,O)2 P 21/a 2/m
09.AJ.20 Calciogadolinite? CaREE(Fe)Be2Si2O10 P 21/a 2/m
09.AJ.20 Datolite CaBSiO4(OH) P 21/c 2/m
09.AJ.20 Hingganite-(Yb) (Yb,Y)2([])Be2Si2O8(OH)2 P 21/a 2/m
09.AJ.20 Homilite Ca2(Fe,Mg)B2Si2O10 P 21/a 2/m
09.AJ.20 Gadolinite-(Ce) (Ce,La,Nd,Y)2FeBe2Si2O10 P 21/c 2/m
09.AJ.20 Gadolinite-(Y) Y2FeBe2Si2O10 P 21/a 2/m
09.AJ.20 Hingganite-(Ce) (Ce,Ca)2([],Fe)Be2Si2O8[(OH),O]2 P 21/a 2/m
09.AJ.20 Hingganite-(Y) Y2([])Be2Si2O8(OH)2 P 21/a 2/m
09.AJ.20 Melanocerite-(Ce) (Ce,Th,Ca)5(Si,B)3O12(OH,F)•n(H2O)(?) Unk (HEX-R) Trig
09.AJ.20 Minasgeraisite-(Y) CaY2Be2Si2O10 P 21/a 2/m

Other Hingganite-(Yb) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Hingganite-(Yb) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Ecole des Mines de Paris
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Print or Cut-and-Paste your Hingganite-(Yb) Specimen Label here :


(Yb,Y)2([ ])Be2Si2O8(OH)2
Dana No: 54.02.01a.04 Strunz No: 09.AJ.20





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