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Liebenbergite

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

Classification of Liebenbergite

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 Liebenbergite

Hardness (Mohs):
6

Optical Data of Liebenbergite

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 Liebenbergite

Formula:
(Ni,Mg)2SiO4
IMA Formula:
Ni2SiO4
Elements listed in formula:
Common Impurities:
Fe,Co

Crystallography of Liebenbergite

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 Volume:
V 286.18 ų (Calculated from Unit Cell)

Type Occurrence of Liebenbergite

Relationship of Liebenbergite to other Species

Member of:
Other Members of Group:
Calcio-olivineCa2SiO4
FayaliteFe22+SiO4
ForsteriteMg2SiO4
GlaucochroiteCaMn2+SiO4
KirschsteiniteCaFe2+SiO4
LaihuniteFe2+Fe23+(SiO4)2
MonticelliteCaMgSiO4
Olivine(Mg,Fe2+)2SiO4
Roepperite (of Brush)(Fe22+,Mn,Zn)SiO4
TephroiteMn22+SiO4
9.AC.AhrensiteFe2SiO4
9.AC.05FayaliteFe22+SiO4
9.AC.05ForsteriteMg2SiO4
9.AC.05GlaucochroiteCaMn2+SiO4
9.AC.05KirschsteiniteCaFe2+SiO4
9.AC.05LaihuniteFe2+Fe23+(SiO4)2
9.AC.05TephroiteMn22+SiO4
9.AC.10MonticelliteCaMgSiO4
9.AC.15BrunogeieriteFe22+Ge4+O4
9.AC.15Ringwoodite(Mg,Fe2+)2SiO4
9.AC.20ChesnokoviteNa2[SiO2(OH)2] · 8H2O
14.26.2PecoraiteNi3(Si2O5)(OH)4
14.26.3Népouite(Ni,Mg)3(Si2O5)(OH)4
14.26.4WillemseiteNi3Si4O10(OH)2
14.26.5Karpinskite(Ni,Mg)2Si2O5(OH)2 (?)
14.26.6Falcondoite(Ni,Mg)4Si6O15(OH)2 · 6H2O

Other Names for Liebenbergite

Name in Other Languages:

Other Information

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 Liebenbergite

Reference List:
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 Liebenbergite

mindat.org URL:
https://www.mindat.org/min-2397.html
Please feel free to link to this page.

Localities for Liebenbergite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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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