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Liebenbergite

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William Ronald Liebenberg
Formula:
(Ni,Mg)2SiO4
Hardness:
6
Crystal System:
Orthorhombic
Member of:
Name:
After Mr. William Ronald Liebenberg, Deputy Director-General of the National Institute for Metallurgy of South Africa.
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Classification of LiebenbergiteHide

Approved
9.AC.05

9 : SILICATES (Germanates)
A : Nesosilicates
C : Nesosilicates without additional anions; cations in octahedral [6] coordination
51.3.1.3

51 : NESOSILICATES Insular SiO4 Groups Only
3 : Insular SiO4 Groups Only with all cations in octahedral [6] coordination
14.26.1

14 : Silicates not Containing Aluminum
26 : Silicates of Ni

Physical Properties of LiebenbergiteHide

Hardness:

Optical Data of LiebenbergiteHide

Type:
Biaxial (-)
RI values:
nα = 1.820 nβ = 1.854 nγ = 1.888
2V:
Measured: 80° , Calculated: 88°
Max Birefringence:
δ = 0.068
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
small

Chemical Properties of LiebenbergiteHide

Formula:
(Ni,Mg)2SiO4
IMA Formula:
Ni2SiO4
Common Impurities:
Fe,Co

Crystallography of LiebenbergiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 4.72 Å, b = 10.19 Å, c = 5.95 Å
Ratio:
a:b:c = 0.463 : 1 : 0.584
Unit Cell V:
286.18 ų (Calculated from Unit Cell)

Type Occurrence of LiebenbergiteHide

Synonyms of LiebenbergiteHide

Other Language Names for LiebenbergiteHide

Relationship of Liebenbergite to other SpeciesHide

Member of:
Other Members of this group:
Calcio-olivineCa2SiO4Orth. mmm (2/m 2/m 2/m)
FayaliteFe2+2SiO4Orth.
ForsteriteMg2SiO4Orth. mmm (2/m 2/m 2/m)
GlaucochroiteCaMn2+SiO4Orth.
KirschsteiniteCaFe2+SiO4Orth. mmm (2/m 2/m 2/m) : Pnma
LaihuniteFe2+Fe3+2(SiO4)2Mon.
MonticelliteCaMgSiO4Orth.
OlivineEquivalent to Fayalite-Forsterite Series; usually a more or less Fe-bearing forsterite.Orth.
Roepperite (of Brush)(Fe2+2,Mn,Zn)SiO4
TephroiteMn2+2SiO4Orth. mmm (2/m 2/m 2/m)

Common AssociatesHide

Associated Minerals Based on Photo Data:
Nosean1 photo of Liebenbergite associated with Nosean on mindat.org.
Schäferite1 photo of Liebenbergite associated with Schäferite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.AC.AhrensiteFe2SiO4Iso. m3m (4/m 3 2/m)
9.AC.05FayaliteFe2+2SiO4Orth.
9.AC.05ForsteriteMg2SiO4Orth. mmm (2/m 2/m 2/m)
9.AC.05GlaucochroiteCaMn2+SiO4Orth.
9.AC.05KirschsteiniteCaFe2+SiO4Orth. mmm (2/m 2/m 2/m) : Pnma
9.AC.05LaihuniteFe2+Fe3+2(SiO4)2Mon.
9.AC.05TephroiteMn2+2SiO4Orth. mmm (2/m 2/m 2/m)
9.AC.10MonticelliteCaMgSiO4Orth.
9.AC.15BrunogeieriteFe2+2Ge4+O4Iso. m3m (4/m 3 2/m) : Fd3m
9.AC.15Ringwoodite(Mg,Fe2+)2SiO4Iso. m3m (4/m 3 2/m) : Ia3d
9.AC.20ChesnokoviteNa2[SiO2(OH)2] · 8H2OOrth. mmm (2/m 2/m 2/m) : Ibca

Related Minerals - Dana Grouping (8th Ed.)Hide

51.3.1.1FayaliteFe2+2SiO4Orth.
51.3.1.2ForsteriteMg2SiO4Orth. mmm (2/m 2/m 2/m)
51.3.1.4TephroiteMn2+2SiO4Orth. mmm (2/m 2/m 2/m)
51.3.1.5LaihuniteFe2+Fe3+2(SiO4)2Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.26.2PecoraiteNi3(Si2O5)(OH)4Mon.
14.26.3Népouite(Ni,Mg)3(Si2O5)(OH)4Orth.
14.26.4WillemseiteNi3Si4O10(OH)2Mon.
14.26.5Karpinskite(Ni,Mg)2Si2O5(OH)2 (?)
14.26.6Falcondoite(Ni,Mg)4Si6O15(OH)2 · 6H2OOrth.

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 LiebenbergiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
De Waal, S.A. and L.C. Calk (1973) Nickel minerals from Barberton, South
Africa: VI. Liebenbergite, a nickel olivine. American Mineralogist, 58, 733-735.
Bish, D.L. (1981) Cation ordering in synthetic and natural Ni-Mg olivine. American Mineralogist: 66: 770-776.

Internet Links for LiebenbergiteHide

Localities for LiebenbergiteHide

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.
Germany
 
  • Saxony-Anhalt
    • Mansfeld Basin
      • Helbra
H. Knoll; Fundstellen im Mansfelder Land, Interessante Mineralien aus den Schlacken der Kupferschiefer-Verhüttung. MineralienWelt, Jg 19 (2008), Heft 1 (Jan-Feb), pag 36-47.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District slag localities
        • Agios Konstantinos [St Constantine] (Kamariza)
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (II). Mineralien-Welt 25 (2), 82-95 (in German).
South Africa (TL)
 
  • Mpumalanga Province
    • Ehlanzeni District
      • Barberton
        • Bon Accord
Am. Min. 61, 502 (1976)
  • North West Province
    • Dr Ruth Segomotsi Mompati District
      • Vryburg
www.lpi.usra.edu/meetings/impacts97/pdf/6055.pdf.
Mineral and/or Locality  
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