Rabejacite
A valid IMA mineral species
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About Rabejacite
Formula:
Ca(UO2)4(SO4)2(OH)6 · 6H2O
Colour:
Bright to amber yellow
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
4.325 (Calculated)
Crystal System:
Triclinic
Name:
Named after its discovery locality.
Type Locality:
Plášil et al. (2014) also describe a Cu-rich variety in which there is an additional Cu2+ site located in between pairs of Ca polyhedra.
Unique Identifiers
Mindat ID:
3348
Long-form identifier:
mindat:1:1:3348:6
GUID
(UUID V4):
(UUID V4):
b6fa5fd2-1f07-4328-b592-6511d5cd25ff
IMA Classification of Rabejacite
Approved
IMA Formula:
Ca2[(UO2)4O4(SO4)2](H2O)8
First published:
1993
Classification of Rabejacite
7.EC.10
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
E : Uranyl sulfates
C : With medium-sized and large cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
E : Uranyl sulfates
C : With medium-sized and large cations
31.6.8.1
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
6 : (AB)5(XO4)2Zq·xH2O
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
6 : (AB)5(XO4)2Zq·xH2O
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 |
---|---|---|
Rbj | 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 Rabejacite
Vitreous
Transparency:
Transparent, Translucent
Colour:
Bright to amber yellow
Hardness:
3 on Mohs scale
Cleavage:
None Observed
Density:
4.325 g/cm3 (Calculated)
Comment:
Measured > 4.1
Optical Data of Rabejacite
Type:
Biaxial (-)
RI values:
nα = 1.617 nβ = 1.710(2) nγ = 1.758(2)
2V:
Measured: 68° , Calculated: 68°
Max Birefringence:
δ = 0.141
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:
High
Dispersion:
r > v weak
Optical Extinction:
X = c; Y and Z ⊥ [001].
Pleochroism:
Strong
Comments:
Y= very pale yellow
Z= sulfur yellow
Z= sulfur yellow
Chemistry of Rabejacite
Mindat Formula:
Ca(UO2)4(SO4)2(OH)6 · 6H2O
Crystallography of Rabejacite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 8.7434(11) Å, b = 8.309(3) Å, c = 8.8693(10) Å
α = 77.86(2)°, β = 104.635(11)°, γ = 82.935(18)°
α = 77.86(2)°, β = 104.635(11)°, γ = 82.935(18)°
Ratio:
a:b:c = 1.052 : 1 : 1.067
Unit Cell V:
598.84 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Flattened crysyals or acicular. Rosettes, rounded nodules, crusts.
Comment:
Originally given cell is orthorhombic, with a = 8.73, b = 17.09, c = 15.72 Å (Z = 4).
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
7.90 Å | (100) |
4.17 Å | (30) |
3.98 Å | (40) |
3.49 Å | (80) |
3.38 Å | (70) |
2.844 Å | (30 broad) |
2.163 Å | (15) |
Comments:
Rabejac deposit, France. The data are from the type description.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
47f : [Uranyl (U⁶⁺) minerals] | |
47h : [Near-surface oxidized, dehydrated minerals] |
Geological Setting:
Oxidation zone of deposits containing uraninite.
Type Occurrence of Rabejacite
General Appearance of Type Material:
Acicular crystals, flattened tablets on {001} to 0.1 mm, or rounded nodules to 0.3 mm
Place of Conservation of Type Material:
Royal Belgian Institute of Natural Sciences, Brussels RC4409, RC4410.
Geological Setting of Type Material:
Secondary mineral. Oxidation zone of uranium deposit.
Associated Minerals at Type Locality:
Reference:
Deliens, M., Piret, P. (1993) La rabejacite, Ca(UO2)4(SO4)2(OH)6·6H2O, nouveau sulfate d'uranyle et de calcium des gîtes du Lodévois, Hérault, France. European Journal of Mineralogy: 5: 873-877.
Synonyms of Rabejacite
Other Language Names for Rabejacite
German:Rabejacit
Spanish:Rabejacita
Common Associates
Associated Minerals Based on Photo Data:
9 photos of Rabejacite associated with Gypsum | CaSO4 · 2H2O |
3 photos of Rabejacite associated with Schoepite | (UO2)8O2(OH)12 · 12H2O |
2 photos of Rabejacite associated with Vandendriesscheite | PbU7O22 · 12H2O |
1 photo of Rabejacite associated with Sejkoraite-(Y) | Y2(UO2)8(SO4)4O6(OH)2 · 26H2O |
1 photo of Rabejacite associated with Pseudojohannite | Cu3(OH)2[(UO2)4(SO4)2] · 12H2O |
1 photo of Rabejacite associated with Cuprosklodowskite | Cu(UO2)2(SiO3OH)2 · 6H2O |
1 photo of Rabejacite associated with Deliensite | Fe[(UO2)2(SO4)2(OH)2](H2O)7 |
1 photo of Rabejacite associated with Johannite | Cu(UO2)2(SO4)2(OH)2 · 8H2O |
1 photo of Rabejacite associated with Jáchymovite | (UO2)8(SO4)(OH)14 · 13H2O |
Related Minerals - Strunz-mindat Grouping
7.EC. | Adolfpateraite | K(UO2)(SO4)(OH)(H2O) |
7.EC. | Beshtauite | (NH4)2(UO2)(SO4)2 · 2H2O |
7.EC. | Seaborgite | LiK2Na6(UO2)(SO4)5(SO3OH)(H2O) |
7.EC. | Nitscheite | (NH4)2[(UO2)2(SO4)3(H2O)2] · 3H2O |
7.EC. | Oldsite | K2Fe2+[(UO2)(SO4)2]2(H2O)8 |
7.EC. | Libbyite | (NH4)2(Na2◻)[(UO2)2(SO4)3(H2O)]2 · 7H2O |
7.EC.05 | Cobaltzippeite | Co(UO2)2(SO4)O2 · 3.5H2O |
7.EC.05 | Magnesiozippeite | Mg(UO2)2(SO4)O2 · 3.5H2O |
7.EC.05 | Nickelzippeite | Ni2(UO2)6(SO4)3(OH)10 · 16H2O |
7.EC.05 | Natrozippeite | Na5(UO2)8(SO4)4O5(OH)3 · 12H2O |
7.EC.05 | Zinczippeite | Zn(UO2)2(SO4)O2 · 3.5H2O |
7.EC.05 | Zippeite | K3(UO2)4(SO4)2O3(OH) · 3H2O |
7.EC.05 | Plavnoite | K0.8Mn0.6[(UO2)2O2(SO4)] · 3.5H2O |
7.EC.05 | Redcanyonite | (NH4)2Mn[(UO2)4O4(SO4)2](H2O)4 |
7.EC.05 | Ammoniozippeite | (NH4)2[(UO2)2(SO4)O2] · H2O |
7.EC.10 | Svornostite | K2Mg[(UO2)(SO4)2]2 · 8H2O |
7.EC.15 | Marécottite | Mg3(UO2)8(SO4)4O6(OH)2 · 28H2O |
7.EC.15 | Sejkoraite-(Y) | Y2(UO2)8(SO4)4O6(OH)2 · 26H2O |
7.EC.20 | Pseudojohannite | Cu3(OH)2[(UO2)4(SO4)2] · 12H2O |
7.EC.40 | Bluelizardite | Na7(UO2)(SO4)4Cl(H2O)2 |
7.EC.45 | Meisserite | Na5(UO2)(SO4)3(SO3OH)(H2O) |
7.EC.45 | Fermiite | Na4(UO2)(SO4)3 · 3H2O |
7.EC.45 | Oppenheimerite | Na2(UO2)(SO4)2 · 3H2O |
7.EC.50 | Plášilite | Na(UO2)(SO4)(OH) · 2H2O |
7.EC.50 | Feynmanite | Na(UO2)(SO4)(OH) · 3.5H2O |
7.EC.55 | Geschieberite | K2(UO2)(SO4)2 · 2H2O |
7.EC.60 | Ottohahnite | Na6(UO2)2(SO4)5(H2O)7 · 1.5H2O |
7.EC.65 | Péligotite | Na6(UO2)(SO4)4 · 4H2O |
7.EC.70 | Klaprothite | Na6(UO2)(SO4)4 · 4H2O |
7.EC.75 | Lussierite | Na10[(UO2)(SO4)4](SO4)2 · 3(H2O) |
7.EC.80 | Navrotskyite | K2Na10(UO2)3(SO4)9 · 2H2O |
7.EC.85 | Pseudomeisserite-(NH4) | (NH4)2Na4[(UO2)2(SO4)5] · 4H2O |
7.EC.90 | Wetherillite | Na2Mg(UO2)2(SO4)4 · 18H2O |
Fluorescence of Rabejacite
Pale yellow under SW and LW UV.
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 Rabejacite
mindat.org URL:
https://www.mindat.org/min-3348.html
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References for Rabejacite
Reference List:
Deliens, Michel, Piret, Paul (1993) La rabejacite, Ca(UO2)4(SO4)2(OH)6·6H2O, nouveau sulfate d'uranyle et de calcium des gites du Lodévois, Hérault, France. European Journal of Mineralogy, 5 (5) 873-877 doi:10.1127/ejm/5/5/0873
Jambor, John L., Roberts, Andrew C., Puziewicz, Jacek (1994) New Mineral Names. American Mineralogist, 79 (5-6) 570-574
Localities for Rabejacite
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).
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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Australia | |
| R.L. Frost et al. (4) |
R.L. Frost et al. (4) | |
Czech Republic | |
| Sejkora et al. (2000) +1 other reference |
Möhn et al. (12/2021) | |
Tvrdý et al. (2010) | |
Plášil et al. (2011) +1 other reference | |
| Desor (04/2022) |
| Tschechien & Slowakei |
| Petr Pauliš et al. (2007) |
France (TL) | |
| Deliens et al. (1993) +1 other reference |
| [Le Cahier des Micromonteurs |
- (1998) | |
Italy | |
| Campostrini et al. (2006) |
Poland | |
| Syczewski et al. (2023) |
Spain | |
| www.foro-minerales.com (n.d.) |
www.foro-minerales.com (n.d.) | |
| Foro FMF Collection +1 other reference |
Switzerland | |
| Stalder et al. (1998) +2 other references |
USA | |
| Bridget E. McCollam (2002) |
| Bridget E. McCollam (2002) |
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Rabejac Est, Le Puech, Lodève, Hérault, Occitanie, France