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Ludjibaite

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Formula:
Cu5(PO4)2(OH)4
Colour:
Blue-green
Lustre:
Vitreous
Specific Gravity:
4.36 (Calculated)
Crystal System:
Triclinic
Name:
Named for the type locality; the Ludjiba deposit, near the Ludjiba River, Democratic Republic of the Congo.

This page provides mineralogical data about Ludjibaite.


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Classification of LudjibaiteHide

Approved
Approval Year:
1987
First Published:
1988
Approval History:
IMA1987-009
8.BD.25

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
D : With only medium-sized cations, (OH, etc.):RO4= 2:1
41.4.3.3

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
4 : (AB)5(XO4)2Zq
19.2.4

19 : Phosphates
2 : Phosphates of Cu

Physical Properties of LudjibaiteHide

Vitreous
Transparency:
Translucent, Opaque
Colour:
Blue-green
Streak:
Pale blue to white
Fracture:
Irregular/Uneven
Density:
4.36 g/cm3 (Calculated)

Optical Data of LudjibaiteHide

Type:
Biaxial (+/-)
RI values:
nα = 1.786 nγ = 1.840
Max Birefringence:
δ = 0.054
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
extreme

Chemical Properties of LudjibaiteHide

Formula:
Cu5(PO4)2(OH)4

Crystallography of LudjibaiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 4.44 Å, b = 5.87 Å, c = 8.68 Å
α = 103.9°, β = 90.3°, γ = 93.2°
Ratio:
a:b:c = 0.756 : 1 : 1.479
Unit Cell V:
219.22 ų (Calculated from Unit Cell)
Morphology:
As bladed crystals, flattened on {011}.
Twinning:
On {011}.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.46 (100)
3.02 (20)
2.462 (50)
2.408 (20)
2.353 (50)
2.017 (20)
1.572 (20)

Type Occurrence of LudjibaiteHide

General Appearance of Type Material:
Aggregates of blades
Place of Conservation of Type Material:
Royal Museum of Central Africa, Tervuren, Belgium, RMG4445.
Belgian Royal Institute of Natural Sciences, Brussels, RC3514.
Reference:
Piret, P., Deliens, M. (1988) Description de la ludjibaïte, un polymorphe de la pseudomalachite, Cu5(PO4)2(OH)4. Bulletin de Minéralogie: 111: 167-171.

Synonyms of LudjibaiteHide

Other Language Names for LudjibaiteHide

German:Ludjibait
Spanish:Ludjibaita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Pseudomalachite8 photos of Ludjibaite associated with Pseudomalachite on mindat.org.
Chenevixite2 photos of Ludjibaite associated with Chenevixite on mindat.org.
Tourmaline2 photos of Ludjibaite associated with Tourmaline on mindat.org.
Reichenbachite1 photo of Ludjibaite associated with Reichenbachite on mindat.org.
Libethenite1 photo of Ludjibaite associated with Libethenite on mindat.org.
Quartz1 photo of Ludjibaite associated with Quartz on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.BD.05CornwalliteCu5(AsO4)2(OH)4Mon. 2/m : P21/b
8.BD.05PseudomalachiteCu5(PO4)2(OH)4Mon. 2/m : P21/b
8.BD.05ReichenbachiteCu5(PO4)2(OH)4Mon. 2/m
8.BD.10ArsenoclasiteMn2+5(AsO4)2(OH)4Orth.
8.BD.10GatehouseiteMn2+5(PO4)2(OH)4Orth. 2 2 2 : P21 21 21
8.BD.15ParweliteMn10Sb2As2Si2O24Mon. m : Bb
8.BD.20ReppiaiteMn2+5(VO4)2(OH)4Mon.
8.BD.30CornubiteCu5(AsO4)2(OH)4Tric. 1 : P1

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

41.4.3.1PseudomalachiteCu5(PO4)2(OH)4Mon. 2/m : P21/b
41.4.3.2ReichenbachiteCu5(PO4)2(OH)4Mon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.2.1LibetheniteCu2(PO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
19.2.2CornetiteCu3(PO4)(OH)3Orth. mmm (2/m 2/m 2/m) : Pbca
19.2.3ReichenbachiteCu5(PO4)2(OH)4Mon. 2/m
19.2.5PseudomalachiteCu5(PO4)2(OH)4Mon. 2/m : P21/b
19.2.6NissoniteCu2Mg2(PO4)2(OH)2 · 5H2OMon.
19.2.7ZapataliteCu3Al4(PO4)3(OH)9 · 4H2OTet.
19.2.8TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2OTric. 1 : P1
19.2.9SieleckiiteCu3Al4(PO4)2(OH)12 · 2H2OTric.
19.2.10PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2OTric. 1 : P1
19.2.11HentscheliteCuFe3+2(PO4)2(OH)2Mon.
19.2.13ChalcosideriteCuFe3+6(PO4)4(OH)8 · 4H2OTric. 1 : P1
19.2.14Phosphofibrite(H2O,K)3.5Fe8(PO4)6(OH)7 · 5H2OMon. 2/m

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 LudjibaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Shoemaker, G.L., Anderson, J.B., Kostiner, E. (1981) The crystal structure of a third polymorph of Cu5(PO4)2(OH)4. American Mineralogist: 66: 169-175.
Piret, P., Deliens, M. (1988) Description de la ludjibaïte, un polymorphe de la pseudomalachite, Cu5(PO4)2(OH)4. Bulletin de Minéralogie: 111: 167-171.
Jambor, J.L., Burke, E.A.J., Ercit, T.S., Grice, J.D. (1988) New mineral names. American Mineralogist: 73: 1492-1499.
Hyršl, J. (1991) Three polymorphs of Cu5(PO4)2(OH)4 from Lubietová, Czechoslovakia. Neues Jahrbuch für Mineralogie, Monatshefte: 91: 281-287.
Frost, R.L., Kloprogge, T., Williams, P.A., Martens, W., Johnson, T.E., Leverett, P. (2002) Vibrational spectroscopy of the basic copper phosphate minerals: pseudomalachite, ludjibaite and reichenbachite. Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy: 58: 2861-2868.
Frost, R.L., Williams, P.A., Martens, W., Kloprogge, J.T., Leverett, P. (2002) Raman spectroscopy of the basic copper phosphate minerals cornetite, libethenite, pseudomalachite, reichenbachite and ludjibaite. Journal of Raman Spectroscopy: 33: 260-263.
Martens, W.N., Frost, R.L., Williams, P.A. (2003) The basic copper phosphate minerals pseudomalachite, ludjibaite and reichenbachite: an infrared emission and Raman spectroscopic study. Neues Jahrbuch für Mineralogie, Monatshefte: 2003: 337-362.
Krivovichev, S.V., Zolotarev, A.A., Popova, V.I. (2016) Hydrogen bonding and structural complexity in the Cu5(PO4)2(OH)4 polymorphs (pseudomalachite, ludjibaite, reichenbachite): combined experimental and theoretical study. Structural Chemistry: 27: 1715-1723.

Internet Links for LudjibaiteHide

Localities for LudjibaiteHide

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.
Australia
 
  • Northern Territory
    • Coomalie Shire
      • Batchelor
        • Rum Jungle
Vera Munro-Smith (2006) Cobalt Mineralisation in Selected Australian Deposits. PhD thesis, University of Western Sydney.
Austria
 
  • Styria
    • Fischbacher Alpen
      • Fischbach
        • Falkenstein
Kolitsch, U. (2010): 1664) Azurit, Brochantit, Carbonatcyanotrichit, Cyanotrichit, Jarosit, Ludjibait, Malachit, Pseudomalachit und weitere Mineralien vom Quarzitsteinbruch bei Falkenstein, Fischbach, Fischbacher Alpen, Steiermark. Pp. 248-250 in Niedermayr et al. (2010): Neue Mineralfunde aus Österreich LIX. Carinthia II, 200./120., 199-260.
Chile
 
  • Atacama Region
    • Chañaral Province
      • Inca de Oro
        • San Pedro de Cachiyuyo District
Uwe Kolitsch (PXRD-analysed)
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
Lapis 2002(7/8), 63-65
Democratic Republic of Congo (Zaïre)
 
  • Katanga (Shaba)
    • Kambove District
      • Likasi (Jadotville; Jadotstad)
Lapis 17(3), 13-40 (1992)
      • Shinkolobwe
Bull. Mineral., 1988, 111
Germany
 
  • Rhineland-Palatinate
    • Siegerland
      • Gebhardshain
        • Kausen
Blaß, G., Graf, H.W. & Reinhardt, M. (1995): Die ehemalige Grube 'Käusersteimel' im Siegerland - der 3. Fundort für das Kupferphosphat Ludjibait. Mineralien-Welt, 6 (5), 11-15.; Wittern: "Mineralfundstellen in Deutschland", 2001
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
No reference listed
Namibia
 
  • Otjozondjupa Region
    • Otavi
      • Uris Farm 481
SMLS Journal 184 (July/August 2003) p.4
Slovakia
 
  • Banská Bystrica Region
    • Banská Bystrica Co.
      • Ľubietová (Libetbánya; Libethen)
Hyršl, J. (1991): Three polymorphs of Cu5(PO4)2(OH) from Ľubietová, Czechoslovakia. N. Jb. Miner. Mh., 6, 281-287.; Braithwaite, R. S. W., & Ryback, G. (1994). Reichenbachite from Cornwall and Portugal. Mineralogical Magazine, 58(392), 449-454.
Martin Števko-unpublished, PXRD and EMPA-WDS confirmed
Mineral and/or Locality  
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