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About LiebauiteHide

Prof. Liebau
Greenish blue
5 - 6
Crystal System:
Named in honour of Prof. Friedrich Karl Franz Liebau (31 May 1926 - 11 March 2011), a German chemist and professor for mineralogy and crystallography at the Christian-Albrechts-University of Kiel, Germany. Prof. Liebau is highly esteemed for this extensive work on the crystallography, topology and classification of silicates, on which he published a book in 1985 ('Structural Chemistry of Silicates: Structure, Bonding and Classification').
This page provides mineralogical data about Liebauite.

Classification of LiebauiteHide


9 : SILICATES (Germanates)
D : Inosilicates
O : Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains

69 : INOSILICATES Chains with Side Branches or Loops
2 : Chains with Side Branches or Loops with P>2

Physical Properties of LiebauiteHide

Greenish blue
5 - 6 on Mohs scale

Optical Data of LiebauiteHide

Biaxial (+)
RI values:
nα = 1.722 nβ = 1.723 nγ = 1.734
Measured: 72° , Calculated: 34°
Max Birefringence:
δ = 0.012
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r > v

Chemical Properties of LiebauiteHide


Crystallography of LiebauiteHide

Crystal System:
Cell Parameters:
a = 10.16 Å, b = 10 Å, c = 19.97 Å
β = 91.56°
a:b:c = 1.016 : 1 : 1.997
Unit Cell V:
2,028.20 ų (Calculated from Unit Cell)

Type Occurrence of LiebauiteHide

Synonyms of LiebauiteHide

Other Language Names for LiebauiteHide


Related Minerals - Nickel-Strunz GroupingHide

9.DO.05PyroxmangiteMnSiO3Tric. 1

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 LiebauiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Zöller, M.H., Tillmanns, E., Hentschel, G. (1992): Liebauite, Ca3Cu5Si9O26, a new silicate mineral with 14er single chain. Zeitschrift für Kristallographie, 200, 115 - 126.
American Mineralogist (1993): 78: 673.
New Minerals (1997), New Minerals 1990-1994.
Zeitschrift für Kristallographie (1992): 200: 115-126.

Internet Links for LiebauiteHide

Localities for LiebauiteHide

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.
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Andernach
        • Nickenich
Künzel, E., Liebauit, ein neues Mineral aus der Eifel, Lapis 9/1993
Zöller, M.H., Tillmanns, E., Hentschel, G. (1992): Liebauite, Ca3Cu5Si9O26, a new silicate mineral with 14er single chain. Zeitschrift für Kristallographie, 200, 115-126.
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