IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Liberite

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About LiberiteHide

Formula:
Li2BeSiO4
Colour:
Pale yellow to brown
Lustre:
Vitreous, Greasy
Hardness:
7
Specific Gravity:
2.6875 - 2.6885
Crystal System:
Monoclinic
Name:
Named in 1964 by Chao for the component elements: lithium and beryllium.
Known as a synthetic compound.


Classification of LiberiteHide

Approved
9.AA.10

9 : SILICATES (Germanates)
A : Nesosilicates
A : Nesosilicates without additional anions; cations in tetrahedral [4] coordination
Dana 7th ed.:
51.1.2.1
51.1.2.1

51 : NESOSILICATES Insular SiO4 Groups Only
1 : Insular SiO4 Groups Only with cations in [4] coordination
14.3.4

14 : Silicates not Containing Aluminum
3 : Silicates of Be

Physical Properties of LiberiteHide

Vitreous, Greasy
Colour:
Pale yellow to brown
Hardness:
Tenacity:
Brittle
Cleavage:
Distinct/Good
Perfect on {010}, distinct on {100} and {001}
Density:
2.6875 - 2.6885 g/cm3 (Measured)    2.69 g/cm3 (Calculated)

Optical Data of LiberiteHide

Type:
Biaxial (-)
RI values:
nα = 1.622 nβ = 1.633 nγ = 1.638
2V:
Measured: 66° , Calculated: 66° to 66.3°
Max Birefringence:
δ = 0.016
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v to r < v strong
Comments:
Z^c(a in structure cell)=41 degrees

Chemical Properties of LiberiteHide

Formula:
Li2BeSiO4
IMA Formula:
Li2Be(SiO4)
Common Impurities:
Al,Fe,Mg,Ca,Na,K,H2O

Crystallography of LiberiteHide

Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Space Group:
Pm
Cell Parameters:
a = 4.68 Å, b = 4.95 Å, c = 6.13 Å
β = 90.5°
Ratio:
a:b:c = 0.945 : 1 : 1.238
Unit Cell V:
142.00 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Minute aggregates occasionally display pinnacoidal faces.
Comment:
Pseudo-orthorhombic.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.82 (100)
3.71 (100)
3.40 (70)
2.59 (100)
2.47 (90)
2.35 (90)
2.27 (90)
2.19 (70)
Comments:
Made on synthetic material

Type Occurrence of LiberiteHide

Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts; National Museum of Natural History, Washington, D.C.
Geological Setting of Type Material:
In veins cutting lepidolite-fluorite-magnetite "ribbon rock" in tactite

Other Language Names for LiberiteHide

German:Liberit
Simplified Chinese:锂铍石
Spanish:Liberita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Bromellite2 photos of Liberite associated with Bromellite on mindat.org.
Hsianghualite2 photos of Liberite associated with Hsianghualite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.AA.05EucryptiteLiAlSiO4Trig. 3 : R3
9.AA.05PhenakiteBe2SiO4Trig. 3 : R3
9.AA.05WillemiteZn2SiO4Trig. 3 : R3

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.3.1PhenakiteBe2SiO4Trig. 3 : R3
14.3.2BertranditeBe4(Si2O7)(OH)2Orth. mm2 : Cmc21
14.3.3BerylliteBe3(SiO4)(OH)2 · H2OOrth.
14.3.5ChkaloviteNa2BeSi2O6Orth. mm2 : Fdd2
14.3.6EudidymiteNa2Be2Si6O15 · H2OMon. 2/m : B2/b
14.3.7EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
14.3.8GugiaiteCa2Be(Si2O7)Tet.
14.3.9Jeffreyite(Ca,Na)2(Be,Al)(Si2O7,HSi2O7)Orth.
14.3.10Semenovite-(Ce)Na8Ca2FeBe6Ce2Si14O40(OH)4F4Orth. mmm (2/m 2/m 2/m)
14.3.11BaryliteBe2Ba(Si2O7)Orth.
14.3.12Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
14.3.13Hingganite-(Yb)(Yb,Y,REE)2□Be2[SiO4]2(OH)2
14.3.14Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
14.3.15Minasgeraisite-(Y)BiCa(Y,Ln)2(□,Mn)2(Be,B,Si)4Si4O16 [(OH),O]4Tric. 1 : P1
14.3.16SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
14.3.17TrimeriteCaMn2+2Be3(SiO4)3Mon. 2/m : P21/m
14.3.18ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2OMon. 2/m : P21/b
14.3.19Tvedalite(Ca,Mn)4Be3Si6O17(OH)4 · 3H2OOrth.
14.3.20HarstigiteCa6(Mn,Mg)Be4Si6(O,OH)24Orth.
14.3.21SverigeiteNaMnMgSnBe2(SiO4)3(OH)Orth. mmm (2/m 2/m 2/m) : Imma
14.3.22Joesmithite{Pb}{Ca2}{Mg3Fe3+2}(Be2Si6O22)(OH)2Mon.
14.3.23Gadolinite-(Y)Y2Fe2+Be2Si2O10Mon. 2/m : P21/b
14.3.24Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10Mon. 2/m
14.3.25Calciogadolinite-(Y)(YCa)2Fe3+Be2[SiO4]2O2

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for LiberiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Chao Ch'un-lin (1964): Liberite Li2BeSiO4, a new lithium-beryllium silicate mineral from the Nanling Ranges, South China. Acta Geologica Sinica 44(3), 334-342 (in Chinese with English abstract). - American Mineralogist (1965), 50, 519 (abstract).
Han-ching, C. (1966): The crystal structure of liberite. Kexue Tongbao 17, 425-428.
West, A. R. (1975): Crystal chemistry of liberite, Li2BeSiO4 and Li2BeGeO4. Bulletin de la Société française de Minéralogie et de Cristallographie 98, 6-10.

Internet Links for LiberiteHide

Localities for LiberiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
China (TL)
 
  • Hunan Province
    • Chenzhou Prefecture
      • Linwu Co.
        • Xianghualing Sn-polymetallic ore field
Chao Ch'un-lin (1964): Acta Geologica Sinica 44(3), 334-342 [TL see: Anthony, J.W. et al.: Handbook of Mineralogy]
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 21, 2018 02:35:56 Page generated: September 25, 2018 13:56:41
Go to top of page