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Rabejacite

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Formula:
Ca(UO2)4(SO4)2(OH)6 · 6H2O
System:
Orthorhombic
Colour:
Bright to amber yellow.
Hardness:
3
Name:
Named after its discovery locality.
This page provides mineralogical data about Rabejacite.

Classification of Rabejacite

Approved
7.EC.10

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
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Type Occurrence of Rabejacite

Place of Conservation of Type Material:
Royal Belgian Institute of Narural Sciences, Brussels RC4409, RC4410
Year of Discovery:
1993

Occurrences of Rabejacite

Geological Setting:
Oxidation zone of deposits containing uraninite.

Physical Properties of Rabejacite

Vitreous
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Bright to amber yellow.
Hardness (Mohs):
3
Density:
4.31 g/cm3 (Calculated)
Comment:
Measured > 4.1

Crystallography of Rabejacite

Crystal System:
Orthorhombic
Cell Parameters:
a = 8.73(1) Å, b = 17.09(2) Å, c = 15.72(2) Å
Ratio:
a:b:c = 0.511 : 1 : 0.92
Unit Cell Volume:
V 2,345.36 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Flattened crysyals or acicular. Rosettes, rounded nodules, crusts.

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.
Surface Relief:
High
Dispersion:
r > v weak
Pleochroism:
Strong
Comments:
Y= very pale yellow
Z= sulfur yellow

Chemical Properties of Rabejacite

Formula:
Ca(UO2)4(SO4)2(OH)6 · 6H2O
Essential elements:
All elements listed in formula:

Relationship of Rabejacite to other Species

7.EC.05CobaltzippeiteCo(UO2)2(SO4)O2 · 3.5H2O
7.EC.05MagnesiozippeiteMg(UO2)2(SO4)O2 · 3.5H2O
7.EC.05NickelzippeiteNi2(UO2)6(SO4)3(OH)10 · 16H2O
7.EC.05NatrozippeiteNa5(UO2)8(SO4)4O5(OH)3 · 12H2O
7.EC.05ZinczippeiteZn(UO2)2(SO4)O2 · 3.5H2O
7.EC.05ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
7.EC.15MarécottiteMg3(UO2)8(SO4)4O6(OH)2 · 28H2O
7.EC.15Sejkoraite-(Y)Y2(UO2)8(SO4)4O6(OH)2 · 26H2O
7.EC.20PseudojohanniteCu6.5(UO2)8(SO4)4O8(OH)5 · 25H2O

Other Names for Rabejacite

Name in Other Languages:
German:Rabejacit
Spanish:Rabejacita

Other Information

Pale yellow under SW and LW UV
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 Rabejacite

Reference List:
European Journal of Mineralogy (1993): 5: 873-877.

American Mineralogist (1994): 79: 572.

New Minerals (1997), New Minerals 1990-1994.

Sejkora, J., Čejka, J., Ondruš, P. (2000) New data of rabejacite (Jáchymov, the Krusné Hory Mts., Czech Republic). Neues Jahrbuch für Mineralogie Monatshefte: 7: 289-301.

Internet Links for Rabejacite

Localities for Rabejacite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • Northern Territory
    • West Arnhem Region
      • Kakadu
        • Ranger Mine
R.L. Frost, D.A. Henry, and K. Erickson, Raman spectroscopic detection of wyartite in the presence of rabejacite. Journal of Raman Spectroscopy, 2004. 35(4): p. 255- 260.
R.L. Frost, D.A. Henry, and K. Erickson, Raman spectroscopic detection of wyartite in the presence of rabejacite. Journal of Raman Spectroscopy, 2004. 35(4): p. 255- 260.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
Tschechien & Slowakei, Mineralien und Funstellen, Jaroslav Hyrsl, Petr Korbel. 2008. page 375
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
Sejkora, J., Čejka, J., Ondruš, P. (2000) New data of rabejacite (Jáchymov, the Krusné Hory Mts., Czech Republic). Neues Jahrbuch für Mineralogie Monatshefte: 7: 289-301; Lapis (2002): (7/8): 63-65.
Tvrdý, J. & Plášil, J. (2010): Jáchymov - Reiche Erzlagerstätte und Radonbad im böhmischen Westerzgebirge. Aufschluss 61, 277-292.
Plášil, J., Dušek, M., Novák, M., Čejka, J., Císařová, I., Škoda, R. (2011): Sejkoraite-(Y), a new member of the zippeite group containing trivalent cations from Jáchymov (St. Joachimsthal), Czech Republic: Description and crystal structure refinement. American Mineralogist, 96, 983-991. ; Jakub Plášil, Jiří Sejkora, Radek Škoda, Pavel Škácha (2014): The recent weathering of uraninite from the Červená vein, Jáchymov (Czech Republic): a fingerprint of the primary mineralization geochemistry onto the alteration association. Journal of Geosciences, 59, 223-253.
  • Moravia (Mähren; Maehren)
    • Vysočina Region
      • Žďár nad Sázavou
        • Rožná deposit
Petr Pauliš, Stanislav Kopecký, Pavel Černý: Uranové minerály České republiky a jejich lokality. (2007)
France
 
  • Languedoc-Roussillon
    • Hérault
      • Lodève
Le Règne Minéral, Hors Série IV (1998)
[Le Cahier des Micromonteurs, 1998, 2, p.13-26]
[Eur.J.Mineral.(1993) 5, 873-877; Le Règne Minéral 1997, 13, p.5-18]
Italy
 
  • Trentino-Alto Adige (Trentino-Südtirol)
    • Trento Province
      • Giudicarie Valleys
        • Chiese Valley
          • Condino
Campostrini, I., Demartin, F., & Gramaccioli, C. M. (2006). Rio Giulis. Minerali secondari del giacimento uranifero presso Condino, Trento. Rivista Mineralogica Italiana, 30(3), 152-165.
Switzerland
 
  • Wallis (Valais)
    • Le Trient Valley
      • Les Marécottes
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 345; American Mineralogist 88(4), 676-685.; - Meisser, N. (2012): La minéralogie de l'uranium dans le massif des Aiguilles Rouges. Matér. Géol. Suisse, Sér. géotech. 96, 183 p.
USA
 
  • New Mexico
    • McKinley Co.
      • Grants District
Bridget E. McCollam (2002) ZIPPEITES: CHEMICAL CHARACTERIZATION AND POWDER X-RAY DIFFRACTION STUDIES OF SYNTHETIC AND NATURAL SAMPLES MS Thesis, Notre Dame University
  • Utah
    • San Juan Co.
      • White Canyon District
        • White Canyon
          • Copper Point
Bridget E. McCollam (2002) ZIPPEITES: CHEMICAL CHARACTERIZATION AND POWDER X-RAY DIFFRACTION STUDIES OF SYNTHETIC AND NATURAL SAMPLES MS Thesis, Notre Dame University
Mineral and/or Locality  
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