Ludjibaite
A valid IMA mineral species
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About Ludjibaite
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.
Polymorph of:
Unique Identifiers
Mindat ID:
2451
Long-form identifier:
mindat:1:1:2451:4
GUID
(UUID V4):
(UUID V4):
f19db0e3-9b2f-45b3-a3e0-643ee045a38b
IMA Classification of Ludjibaite
Approved
Approval year:
1987
First published:
1988
Approval history:
IMA1987-009
Classification of Ludjibaite
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
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
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
4 : (AB)5(XO4)2Zq
19.2.4
19 : Phosphates
2 : Phosphates of Cu
19 : Phosphates
2 : Phosphates of Cu
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Ldj | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Ludjibaite
Vitreous
Transparency:
Translucent, Opaque
Colour:
Blue-green
Streak:
Pale blue to white
Fracture:
Irregular/Uneven
Density:
4.36 g/cm3 (Calculated)
Optical Data of Ludjibaite
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.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
extreme
Chemistry of Ludjibaite
Mindat Formula:
Cu5(PO4)2(OH)4
Elements listed:
Crystallography of Ludjibaite
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°
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}.
Crystal Structure
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2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0000808 | Ludjibaite | 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 |  | 1981 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.46 Å | (100) |
| 3.02 Å | (20) |
| 2.462 Å | (50) |
| 2.408 Å | (20) |
| 2.353 Å | (50) |
| 2.017 Å | (20) |
| 1.572 Å | (20) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Ludjibaite
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.
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 Ludjibaite
Other Language Names for Ludjibaite
German:Ludjibait
Spanish:Ludjibaita
Common Associates
Associated Minerals Based on Photo Data:
| 24 photos of Ludjibaite associated with Pseudomalachite | Cu5(PO4)2(OH)4 |
| 9 photos of Ludjibaite associated with Quartz | SiO2 |
| 5 photos of Ludjibaite associated with Olivenite | Cu2(AsO4)(OH) |
| 4 photos of Ludjibaite associated with Reichenbachite | Cu5(PO4)2(OH)4 |
| 4 photos of Ludjibaite associated with Libethenite | Cu2(PO4)(OH) |
| 2 photos of Ludjibaite associated with Chenevixite | Cu2Fe3+2(AsO4)2(OH)4 |
| 2 photos of Ludjibaite associated with Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| 2 photos of Ludjibaite associated with Pyromorphite | Pb5(PO4)3Cl |
| 1 photo of Ludjibaite associated with Goyazite | SrAl3(PO4)(PO3OH)(OH)6 |
| 1 photo of Ludjibaite associated with Alunite Supergroup | AD3(XO4)2(OH)6 |
Related Minerals - Strunz-mindat Grouping
| 8.BD. | Antipovite | Cu5O2(PO4)2 |
| 8.BD.05 | Cornwallite | Cu5(AsO4)2(OH)4 |
| 8.BD.05 | Pseudomalachite | Cu5(PO4)2(OH)4 |
| 8.BD.05 | Reichenbachite | Cu5(PO4)2(OH)4 |
| 8.BD.10 | Arsenoclasite | Mn2+5(AsO4)2(OH)4 |
| 8.BD.10 | Gatehouseite | Mn2+5(PO4)2(OH)4 |
| 8.BD.15 | Parwelite | Mn10Sb2As2Si2O24 |
| 8.BD.20 | Reppiaite | Mn2+5(VO4)2(OH)4 |
| 8.BD.30 | Cornubite | Cu5(AsO4)2(OH)4 |
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.
Internet Links for Ludjibaite
mindat.org URL:
https://www.mindat.org/min-2451.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Ludjibaite
Reference List:
Shoemaker, Gerald L., Anderson, James B., Kostiner, Edward (1981) The crystal structure of a third polymorph of Cu5(PO4)2(OH)4. American Mineralogist, 66 (1-2) 169-175
Piret, Paul, Deliens, Michel (1988) Description de la ludjibaïte, un polymorphe de la pseudomalachite, Cu5(PO4)2(OH)4. Bulletin de Minéralogie, 111 (2) 167-171 doi:10.3406/bulmi.1988.8081
Jambor, John L., Ercit, Ernst A. J. Burke T. Scott, Grice, Joel D. (1988) New Mineral Names. American Mineralogist, 73 (11-12) 1492-1499
Piret, Paul, Deliens, Michel (1988) Description de la ludjibaïte, un polymorphe de la pseudomalachite, Cu5(PO4)2(OH)4. Bulletin de Minéralogie, 111 (2) 167-171 doi:10.3406/bulmi.1988.8081
Frost, Ray L, Kloprogge, Theo, Williams, Peter A, Martens, Wayde, Johnson, Therese E, Leverett, Peter (2002) Vibrational spectroscopy of the basic copper phosphate minerals: pseudomalachite, ludjibaite and reichenbachite. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 58 (13) 2861-2868 doi:10.1016/s1386-1425(02)00034-3
Frost, Ray L., Williams, Peter A., Martens, Wayde, Kloprogge, J. Theo, Leverett, Peter (2002) Raman spectroscopy of the basic copper phosphate minerals cornetite, libethenite, pseudomalachite, reichenbachite and ludjibaite. Journal of Raman Spectroscopy, 33 (4). 260-263 doi:10.1002/jrs.850
Martens, Wayde N., Frost, Ray L., Williams, Peter A. (2003) The basic copper phosphate minerals pseudomalachite, ludjibaite and reichenbachite: an infrared emission and Raman spectroscopic study. Neues Jahrbuch für Mineralogie - Monatshefte, 2003 (8) 337-362 doi:10.1127/0028-3649/2003/2003-0337
Makovicky, Emil (2019) The pseudomalachite-ludjibaite-reichenbachite conundrum: OD description. The Canadian Mineralogist, 57 (5) 571-581 doi:10.3749/canmin.1900016
virtualcollections.naturalsciences.be (n.d.) http://virtualcollections.naturalsciences.be/virtual-collections/geology/mineralogy/mineralogy-types/ludjibaite-rc3514
Localities for Ludjibaite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| Vera Munro-Smith (2006) |
Austria | |
| Kolitsch (2010) |
Brazil | |
| RRUFF R060413 |
Chile | |
| Uwe Kolitsch (PXRD-analysed) |
Czech Republic | |
| Lapis 2002 (7/8) |
DR Congo (TL) | |
| Piret et al. (1988) +1 other reference |
| Lapis (1992) +1 other reference |
Germany | |
| Blaß et al. (1995) +1 other reference |
Greece | |
| WENDEL et al. (1999) |
Namibia | |
| SMLS Journal 184 (July/August 2003) |
Portugal | |
| Pedro Alves collection and analytical ... |
Slovakia | |
| Hyršl (1991) +1 other reference |
| Števko et al. (2016) | |
USA | |
| Walstrom (2018) |
| Robert E.Walstrom Collection | |
| Walstrom (n.d.) |
Quick NavTopAbout LudjibaiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Rainer mining field, Podlipa deposit, Ľubietová, Banská Bystrica District, Banská Bystrica Region, Slovakia