Guilleminite (original) (raw)
A valid IMA mineral species
About GuilleminiteHide
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Formula:
Ba(UO2)3(SeO3)2O2 · 3H2O
Lustre:
Waxy, Greasy, Dull, Earthy
Crystal System:
Orthorhombic
Name:
Named by R. Pierrot, J. Toussaint, and T. Verbeek in 1965 in honor of Jean Claude Guillemin [September 13, 1923 France - April 6, 1994 France], chemist and mineralogist, 1957-1969 he was professor at the Ecole des Mines in Paris and curator of the mineral collection of the Ecole des Mines. Guillemin was director general of the Union Miniere du Haut-Katanga and co-founder of the International Mineralogical Association.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:1771:4
723358e5-c1e7-4eb1-94cd-de5f69b34860
IMA Classification of GuilleminiteHide
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IMA Formula:
Ba(UO2)3(Se4+O3)2O2 · 3H2O
Type description reference:
Classification of GuilleminiteHide
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4.JJ.10
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
J : Selenites with additional anions, with H2O
34.7.3.1
34 : SELENITES, TELLURITES AND SULFITES
7 : Hydrated Selenites, Tellurites and Sulfites containing Hydroxyl or Halogen
28.1.9
28 : Selenites, Selenates, Tellurites, and Tellurates
1 : Selenites
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Gul | 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 GuilleminiteHide
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Waxy, Greasy, Dull, Earthy
Cleavage:
Perfect
{100} perfect, {010} good.
Density:
4.88(2) g/cm3 (Measured) 5.08 g/cm3 (Calculated)
Optical Data of GuilleminiteHide
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RI values:
_n_α = 1.720 _n_β = 1.798 _n_γ = 1.805
2V:
Measured: 35° , Calculated: 32°
δ = 0.085
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Optical Extinction:
Parallel. X = c; Y = b; Z = a.
Comments:
X = bright yellow; Y = yellow; Z = colorless.
Chemistry of GuilleminiteHide
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Mindat Formula:
Ba(UO2)3(SeO3)2O2 · 3H2O
Crystallography of GuilleminiteHide
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Crystal System:
Orthorhombic
Class (H-M):
m _m_2 - Pyramidal
Cell Parameters:
a = 7.29 Å, b = 16.87 Å, c = 7.07 Å
Ratio:
a:b:c = 0.432 : 1 : 0.419
Unit Cell V:
869.48 ų (Calculated from Unit Cell)
Morphology:
As rectangular crystals, tabular on {010}. Forms include {001}, {010}, {001}, and minor {101}.
Comment:
Space group is P21nm
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005466 | Guilleminite | Cooper M A, Hawthorne F C (1995) The crystal structure of guilleminite, a hydrated Ba-U-Se sheet structure The Canadian Mineralogist 33 1103-1109 |  |
1995 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.39 Å | (100) |
| 7.29 Å | (100) |
| 6.68 Å | (60) |
| 6.51 Å | (20) |
| 3.55 Å | (80) |
| 3.17 Å | (40) |
| 3.04 Å | (60) |
| 2.80 Å | (60) |
Geological EnvironmentHide
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Type Occurrence of GuilleminiteHide
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General Appearance of Type Material:
Canary-yellow coatings and silky masses up to 1 cm2. In geodes, it forms tablets up to 0.4 x 0.2 mm.
Place of Conservation of Type Material:
National School of Mines, Paris, France.
National Museum of Natural History, Washington, D.C., USA, 119360.
Geological Setting of Type Material:
Oxidized zone of a uranium-selenium-copper deposit.
Associated Minerals at Type Locality:
Reference:
Pierrot, R., Toussaint, J., Verbeek, T. (1965) La guilleminite, une nouvelle espèce minérale. Bulletin de la Société Française de Minéralogie et de Cristallographie, 88, 132-135.
Synonyms of GuilleminiteHide
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Other Language Names for GuilleminiteHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 4.JJ. | Petermegawite | Al6(Se4+O3)3[SiO3(OH)](OH)9 · 10H2O | Orth. m _m_2 : C m _c_21 |
|---|---|---|---|
| 4.JJ. | Borzęckiite | Pb(UO2)3(SeO3)2O2 · 3H2O | Orth. m _m_2 |
| 4.JJ.05 | Marthozite | Cu2+(UO2)3(SeO3)2O2 · 8H2O | Orth. m _m_2 |
| 4.JJ.15 | Piretite | Ca(UO2)3(SeO3)2(OH)4 · 4H2O | Orth. |
| 4.JJ.20 | Demesmaekerite | Pb2Cu5(UO2)2(SeO3)6(OH)6 · 2H2O | Tric. 1 : _P_1 |
| 4.JJ.25 | Haynesite | (UO2)3(OH)2(SeO3)2 · 5H2O | Orth. |
| 4.JJ.30 | Favreauite | PbBiCu6O4(SeO3)4(OH) · H2O | Tet. 4/m : _P_4/n |
Fluorescence of GuilleminiteHide
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Other InformationHide
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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 GuilleminiteHide
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References for GuilleminiteHide
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Localities for GuilleminiteHide
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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
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- 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.
| DR Congo | |
|---|---|
| Haut-Katanga Kambove Territory Shinkolobwe ⓘ Shinkolobwe Mine | KMMA +1 other reference |
| Lualaba Mutshatsha Kolwezi ⓘ Musonoi Mine (TL) |
Pierrot et al. (1965) +2 other references |
| France | |
| Auvergne-Rhône-Alpes Puy-de-Dôme Clermont-Ferrand Olloix ⓘ Liauzun | - (1998) |
| Spain | |
| Catalonia Lleida Pallars Jussà La Vall Fosca La Torre de Cabdella Castell-estaó ⓘ Eureka mine | Castillo-Oliver et al. (2019) |