Jouravskite
A valid IMA mineral species
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About Jouravskite
Georges Jouravsky
Formula:
Ca3Mn4+(SO4)(CO3)(OH)6 · 12H2O
Colour:
Bright yellow, greenish yellow to greenish orange, pink
Lustre:
Vitreous
Hardness:
2½
Specific Gravity:
1.95
Crystal System:
Hexagonal
Member of:
Name:
Named in 1965 by Christophe Gaudefroy and François Permingeat in honor of Georges Jouravsky (1896, Warsaw, Poland – 1964), Chief Geologist, Geological Survey of Morocco, for his work on the mineral deposits of Morocco.
Type Locality:
Isostructural with:
Unique Identifiers
Mindat ID:
2118
Long-form identifier:
mindat:1:1:2118:6
IMA Classification of Jouravskite
Approved
IMA Formula:
Ca3Mn4+(S6+O4)(CO3)(OH)6·12H2O
Approval year:
1965
First published:
1965
Classification of Jouravskite
7.DG.15
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
G : With large and medium-sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
G : With large and medium-sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3
32.4.4.3
32 : COMPOUND SULFATES
4 : Hydrated Compound Sulfates containing Hydroxyl or Halogen
32 : COMPOUND SULFATES
4 : Hydrated Compound Sulfates containing Hydroxyl or Halogen
12.2.17
12 : Carbonates with other anions
2 : Carbonates with sulphate
12 : Carbonates with other anions
2 : Carbonates with sulphate
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 for Standard |
|---|---|---|
| Jou | 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 Jouravskite
Vitreous
Transparency:
Transparent, Translucent
Colour:
Bright yellow, greenish yellow to greenish orange, pink
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
On {1010}
On {1010}
Density:
1.95(1) g/cm3 (Measured)
Optical Data of Jouravskite
Type:
Uniaxial (-)
RI values:
nω = 1.556(2) nε = 1.540(2)
Max. Birefringence:
δ = 0.016
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Pleochroism:
Weak
Comments:
Barely perceptible.
Comments:
The interference colors are very abnormal, alternating shades of green and russet being observed in favorable sections up to the 17th order, rather than the ordinary colors.
Chemistry of Jouravskite
Mindat Formula:
Ca3Mn4+(SO4)(CO3)(OH)6 · 12H2O
Element Weights:
Crystallography of Jouravskite
Crystal System:
Hexagonal
Class (H-M):
6 - Pyramidal
Space Group:
P63
Cell Parameters:
a = 11.07129(14) Å, c = 10.62650(14) Å
Ratio:
a:c = 1 : 0.96
Unit Cell V:
1128.02 ų
Z:
3
Morphology:
Prism {1010} and dipyramid {1012}.
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0009362 | Jouravskite | Granger M M, Protas J (1969) Determination et etude de la structure cristalline de la jouravskite Ca3MnIV(SO4)(CO3)(OH)*12(H2O) Acta Crystallographica B25 1943-1951 |  | 1969 | Tachgagalt mine, Morocco | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.6 Å | (very very strong) |
| 5.53 Å | (strong) |
| 3.81 Å | (strong) |
| 3.42 Å | (medium strong) |
| 2.73 Å | (medium strong) |
| 2.52 Å | (medium strong) |
| 2.17 Å | (medium strong) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits | |
| Stage 7: Great Oxidation Event | <2.4 |
| 45a : [Sulfates, arsenates, selenates, antimonates] | |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] |
Type Occurrence of Jouravskite
General Appearance of Type Material:
Greenish-yellow to greenish-orange spots 1-5 mm across in a dark mass of manganese minerals The individual grains are several tenths of a millimeter in diameter and rarely show crystal faces.
Place of Conservation of Type Material:
Natural History Museum, Paris, France, 175.152.
National School of Mines, Paris, France.
National School of Mines, Paris, France.
Geological Setting of Type Material:
Oxidized zone of a manganese deposit.
Associated Minerals at Type Locality:
Synonyms of Jouravskite
Other Language Names for Jouravskite
Relationship of Jouravskite to other Species
Member of:
Other Members of Ettringite Group:
| Bentorite | Ca6Cr2(SO4)3(OH)12 · 26H2O | Trig. 3m : P31c |
| Buryatite | Ca3(Si,Fe3+,Al)(SO4)B(OH)4(OH,O)6 · 12H2O | Trig. 3m : P31c |
| Carraraite | Ca3(SO4)[Ge(OH)6](CO3) · 12H2O | Hex. |
| Charlesite | Ca6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O | Trig. 3m : P31c |
| Chiyokoite | Ca3Si(CO3)[B(OH)4]O (OH)5 · 12H2O | Hex. 6 : P63 |
| Ettringite | Ca6Al2(SO4)3(OH)12 · 26H2O | Trig. 3m : P31c |
| Hielscherite | Ca3Si(SO4)(SO3)(OH)6 · 11H2O | Hex. 6 : P63 |
| Imayoshiite | Ca3Al(CO3)[B(OH)4](OH)6 · 12H2O | Hex. 6/mmm(6/m2/m2/m) : P63/mmc |
| Kottenheimite | Ca 3Si(SO4)2(OH)6 · 12H2O | Hex. 6/m : P63/m |
| Micheelsenite | (Ca2Y)Al(PO3OH)(CO3)(OH)6 · 12H2O | Hex. 6 : P63 |
| Siwaqaite | Ca6Al2(CrO4)3(OH)12 · 26H2O | Trig. 3m : P31c |
| Sturmanite | Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25H2O | Trig. 3m : P31c |
| Tatarinovite | Ca3Al(SO4)[B(OH)4](OH)6 · 12H2O | Hex. 6 : P63 |
| Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O | Hex. 6 : P63 |
| 'UM2008-07-CO:AlBCaHSSi' | Ca6(Al,Si)2(CO3,SO4)2[B(OH)4](OH,O)12 · 26H2O | |
| 'Unnamed (possible Mn(IV) analogue of Sturmanite)' | Ca6Mn4+2(SO4)2[B(OH)4](OH)10O2 · nH2O |
Common Associates
Associations Based on Photo Data:
| 139 photos of Jouravskite associated with Xonotlite | Ca6(Si6O17)(OH)2 |
| 41 photos of Jouravskite associated with Bultfonteinite | Ca2(HSiO4)F · H2O |
| 12 photos of Jouravskite associated with Oyelite | Ca10Si8B2O29 · 12.5H2O |
| 10 photos of Jouravskite associated with Manganite | Mn3+O(OH) |
| 9 photos of Jouravskite associated with Ettringite | Ca6Al2(SO4)3(OH)12 · 26H2O |
| 7 photos of Jouravskite associated with 'Manganese Oxides' | |
| 4 photos of Jouravskite associated with Quartz | SiO2 |
| 3 photos of Jouravskite associated with Andradite | Ca3Fe3+2(SiO4)3 |
| 2 photos of Jouravskite associated with Marokite | CaMn3+2O4 |
| 2 photos of Jouravskite associated with Hydroxyapophyllite-(K) | KCa4(Si8O20)(OH,F) · 8H2O |
Related Minerals - Strunz-mindat Grouping
| 7.DG. | Mathesiusite | K5(UO2)4(SO4)4(VO5) · 4H2O |
| 7.DG.05 | Darapskite | Na3(SO4)(NO3) · H2O |
| 7.DG.10 | Clinoungemachite | (Na, K, Fe, SO4) |
| 7.DG.10 | Humberstonite | Na7K3Mg2(SO4)6(NO3)2 · 6H2O |
| 7.DG.10 | Ungemachite | K3Na8Fe(SO4)6(NO3)2 · 6H2O |
| 7.DG.15 | Chiyokoite | Ca3Si(CO3)[B(OH)4]O (OH)5 · 12H2O |
| 7.DG.15 | Kottenheimite | Ca 3Si(SO4)2(OH)6 · 12H2O |
| 7.DG.15 | Hielscherite | Ca3Si(SO4)(SO3)(OH)6 · 11H2O |
| 7.DG.15 | Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| 7.DG.15 | Bentorite | Ca6Cr2(SO4)3(OH)12 · 26H2O |
| 7.DG.15 | Carraraite | Ca3(SO4)[Ge(OH)6](CO3) · 12H2O |
| 7.DG.15 | Ettringite | Ca6Al2(SO4)3(OH)12 · 26H2O |
| 7.DG.15 | Birunite | Ca18(SiO3)8.5(CO3)8.5SO4 · 15H2O(?) |
| 7.DG.15 | Siwaqaite | Ca6Al2(CrO4)3(OH)12 · 26H2O |
| 7.DG.15 | Buryatite | Ca3(Si,Fe3+,Al)(SO4)B(OH)4(OH,O)6 · 12H2O |
| 7.DG.15 | Charlesite | Ca6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O |
| 7.DG.15 | Tatarinovite | Ca3Al(SO4)[B(OH)4](OH)6 · 12H2O |
| 7.DG.15 | Imayoshiite | Ca3Al(CO3)[B(OH)4](OH)6 · 12H2O |
| 7.DG.15 | Sturmanite | Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25H2O |
| 7.DG.20 | Rapidcreekite | Ca2(SO4)(CO3) · 4H2O |
| 7.DG.25 | Tatarskite | Ca6Mg2(SO4)2(CO3)2(OH)4Cl4 · 7H2O |
| 7.DG.30 | Nakauriite | Cu8(SO4)4(CO3)(OH)6 · 48H2O |
| 7.DG.35 | Chessexite | (Na,K)4Ca2(Mg,Zn)3Al8(SO4)10(SiO4)2 · 40H2O |
| 7.DG.40 | Fuenzalidaite | K6(Na,K)4Na6Mg10(SO4)12(IO3)12 · 12H2O |
| 7.DG.40 | Carlosruizite | K6(Na,K)4Na6Mg10(SeO4)12(IO3)12 · 12H2O |
| 7.DG.45 | 'Chelyabinskite' | (Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?) |
| 7.DG.55 | Ramazzoite | [Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36] |
| 7.DG.60 | Witzkeite | Na4K4Ca(NO3)2(SO4)4 · 2H2O |
Other Information
IR Spectrum:
the spectrum contains specific bands of Mn4+(OH)6 octahedra, CO32− and SO42−anions, and H2O molecules
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 Jouravskite
mindat.org URL:
https://www.mindat.org/min-2118.html
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References for Jouravskite
Reference List:
Gaudefroy, Christophe, Permingeat, François (1965) La jouravskite, une nouvelle espèce minérale. Bulletin de Minéralogie, 88 (2) 254-262 doi:10.3406/bulmi.1965.5841
Gaudefroy, Christophe, Permingeat, François (1965) La jouravskite, une nouvelle espèce minérale. Bulletin de Minéralogie, 88 (2) 254-262 doi:10.3406/bulmi.1965.5841
Granger, M. M., Protas, J. (1969) Détermination et étude de la structure cristalline de la jourvaskite Ca3MnIV(SO4)(CO3)(OH)6.12H2O. Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 25 (10) 1943-1951 doi:10.1107/s0567740869005000
Chukanov, Nikita V., Zubkova, Natalia V., Pautov, Leonid A., Göttlicher, Jörg, Kasatkin, Anatoly V., Van, Konstantin V., Ksenofontov, Dmitriy A., Pekov, Igor V., Vozchikova, Svetlana A., Pushcharovsky, Dmitry Yu. (2019) Jouravskite: refined data on the crystal structure, chemical composition and spectroscopic properties. Physics and Chemistry of Minerals, 46 (4) 417-425 doi:10.1007/s00269-018-1012-8
Localities for Jouravskite
Showing 6 localities.
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.
Jordan | |
| Pitty et al. (2010) |
| Khoury et al. (1985) |
Morocco (TL) | |
| Gaudefroy et al. (1965) |
South Africa | |
| Pohl et al. (1991) |
| Cairncross et al. (1995) | |
| Thorne (n.d.) +1 other reference |
Quick NavTopAbout JouravskiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Tachgagalt Mine, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco