Mineralogy Database

Liberite Mineral Data

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General Liberite Information

Help on Chemical  Formula: Chemical Formula: Li2BeSiO4
Help on Composition: Composition: Molecular Weight = 114.98 gm
   Lithium    12.07 %  Li   25.99 % Li2O
   Beryllium   7.84 %  Be   21.75 % BeO
   Silicon    24.43 %  Si   52.26 % SiO2
   Oxygen     55.66 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Li2Be(SiO4)
Help on Environment: Environment: In veins cutting a lepidolite-Fluorite-magnetite "ribbon rock" in tactite.
Help on IMA Status: IMA Status: Approved IMA 1964
Help on Locality: Locality: Hsianghua Ridge, Linwu Co., Hunan Province, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Presumably for LIthium and BERyllium in the composition.
Help on Name Pronunciation: Name Pronunciation: Liberite Say LIBERITE

Liberite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.2355:1:0.9514
Help on Cell Dimensions: Cell Dimensions: a = 6.111, b = 4.946, c = 4.706, Z = 2; beta = 90.33° V = 142.24 Den(Calc)= 2.68
Help on Crystal System: Crystal System: Monoclinic - Domatic H-M Symbol (m) Space Group: Pn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.84(1), 3.72(1), 3.41(0.4),2.596(0.8), 2.471(0.6), 2.349(0.8), 2.273(0.6),

Physical Properties of Liberite

Help on Cleavage: Cleavage: {010} Perfect, {100} Distinct, {001} Distinct
Help on Color: Color: Brown, Light yellow.
Help on Density: Density: 2.688
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Hardness: Hardness: 7 - Quartz
Help on Luster: Luster: Vitreous - Greasy

Optical Properties of Liberite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.025 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.022 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2355,KPDmeas= 0.2348,KC= 0.2407
Ncalc = 1.65
Help on Optical Data: Optical Data: Biaxial (-), a=1.622, b=1.6332, g=1.638, bire=0.0160, 2V(Calc)=66, 2V(Meas)=66.3.

Calculated Properties of Liberite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.61 gm/cc
note: Specific Gravity of Liberite =2.68 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PELiberite = 1.09 barns/electron
U=PELiberite x rElectron Density= 2.86 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Liberite is Not Radioactive

Liberite Classification

Help on  Dana Class: Dana Class: (51)Nesosilicate Insular SiO4 Groups Only
  (51.01)with cations in [4] coordination
  (51.01.02)Dana Group Liberite Li2BeSiO4 Pn m
Help on  Strunz Class: Strunz Class: 09.AA.10 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AA -Nesosilicates without additional anions;
09.AA.10 Liberite Li2BeSiO4 Pn m

Other Liberite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Liberite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 09.AA.10





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