Iriginite
A valid IMA mineral species - grandfathered
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About Iriginite
Formula:
(UO2)Mo2O7 · 3H2O
Colour:
Canary yellow
Lustre:
Vitreous, Dull
Hardness:
1 - 2
Crystal System:
Orthorhombic
Name:
The author liked the sound of the name.
This page provides mineralogical data about Iriginite.
Unique Identifiers
Mindat ID:
2046
Long-form identifier:
mindat:1:1:2046:2
GUID
(UUID V4):
(UUID V4):
1ef145ff-8430-46c6-98ab-f64f657f6b89
IMA Classification of Iriginite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
(UO2)Mo6+2O7 · 3H2O
Classification of Iriginite
4.GB.60
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
G : Uranyl Hydroxides
B : With additional cations (K, Ca, Ba, Pb, etc.); with mainly UO2(O,OH)5 pentagonal polyhedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
G : Uranyl Hydroxides
B : With additional cations (K, Ca, Ba, Pb, etc.); with mainly UO2(O,OH)5 pentagonal polyhedra
49.2.3.1
49 : HYDRATED MOLYBDATES AND TUNGSTATES
2 : Hydrated Normal Molybdates and Tungstates
49 : HYDRATED MOLYBDATES AND TUNGSTATES
2 : Hydrated Normal Molybdates and Tungstates
27.3.7
27 : Sulphites, Chromates, Molybdates and Tungstates
3 : Molybdates
27 : Sulphites, Chromates, Molybdates and Tungstates
3 : Molybdates
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 |
|---|---|---|
| Irg | 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 Iriginite
Optical Data of Iriginite
Type:
Biaxial (-)
RI values:
nα = 1.730 - 1.764 nβ = 1.820 - 1.889 nγ = 1.930 - 1.936
2V:
Measured: 60° , Calculated: 58° to 90°
Max Birefringence:
δ = 0.200
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:
Very High
Dispersion:
r > v
Chemistry of Iriginite
Mindat Formula:
(UO2)Mo2O7 · 3H2O
Elements listed:
Crystallography of Iriginite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcm
Cell Parameters:
a = 12.77 Å, b = 6.71 Å, c = 11.53 Å
Ratio:
a:b:c = 1.903 : 1 : 1.718
Unit Cell V:
987.97 ų (Calculated from Unit Cell)
Z:
4
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) |
|---|---|---|---|---|---|---|---|
| 0005691 | Iriginite | Krivovichev S V, Burns P C (2000) The crystal chemistry of uranyl molybdates. II. the crystal structure of iriginite The Canadian Mineralogist 38 847-851 |  | 2000 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.222 Å | (100) |
| 1.129 Å | (80) |
| 2.625 Å | (60) |
| 2.142 Å | (60) |
| 1.836 Å | (60) |
| 1.249 Å | (60) |
| 1.206 Å | (60) |
| 1.188 Å | (60) |
| 1.165 Å | (60) |
| 6.4 Å | (50) |
| 1.533 Å | (50) |
Comments:
Aleksandrovskii Golets deposit, Russia. Data 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] | |
| 47f : [Uranyl (U⁶⁺) minerals] | |
| 47h : [Near-surface oxidized, dehydrated minerals] | |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 55 : Anthropogenic mine minerals |
Type Occurrence of Iriginite
General Appearance of Type Material:
Very fine-grained dense yellow aggregates, sometimes forming pseudomorphs after brannerite.
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, Russia, number 1257/2 (type).
Geological Setting of Type Material:
Granulated albitite, with U-Mo minerals.
Associated Minerals at Type Locality:
Other Language Names for Iriginite
Common Associates
Associated Minerals Based on Photo Data:
| 9 photos of Iriginite associated with Umohoite | (UO2)MoO4 · 2H2O |
| 8 photos of Iriginite associated with Mourite | UMo5O12(OH)10 |
| 4 photos of Iriginite associated with Ilsemannite | Mo3O8 · nH2O |
| 4 photos of Iriginite associated with Calcurmolite | Ca[(UO2)3(MoO4)2(OH)4](H2O)~5.0 |
| 2 photos of Iriginite associated with Gypsum | CaSO4 · 2H2O |
| 2 photos of Iriginite associated with Unnamed (Hydrous Zr Molybdate) | Zr-Mo-O-OH |
| 2 photos of Iriginite associated with Melkovite | [Ca2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O36(OH)] |
| 2 photos of Iriginite associated with Jarosite | KFe3+3(SO4)2(OH)6 |
| 2 photos of Iriginite associated with Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| 2 photos of Iriginite associated with Fluorite | CaF2 |
Related Minerals - Strunz-mindat Grouping
| 4.GB.05 | Agrinierite | K2(Ca,Sr)[(UO2)3O3(OH)2]2 · 5H2O |
| 4.GB.05 | Compreignacite | K2(UO2)6O4(OH)6 · 7H2O |
| 4.GB.05 | Rameauite | K2Ca(UO2)6O6(OH)4 · 6H2O |
| 4.GB.10 | Becquerelite | Ca(UO2)6O4(OH)6 · 8H2O |
| 4.GB.10 | Billietite | Ba(UO2)6O4(OH)6 · 4-8H2O |
| 4.GB.10 | Protasite | Ba(UO2)3O3(OH)2 · 3H2O |
| 4.GB.15 | Richetite | (Fe3+,Mg)Pb 8.6(UO2)36O36(OH)24 · 41H2O |
| 4.GB.20 | Bauranoite | Ba(UO2)2(OH)6 · 1-2H2O |
| 4.GB.20 | Calciouranoite | (Ca,Ba,Pb)U2O7 · 5H2O |
| 4.GB.20 | Metacalciouranoite | (Ca,Ba,Pb,K2)U2O7 · 2H2O |
| 4.GB.25 | Fourmarierite | Pb(UO2)4O3(OH)4 · 4H2O |
| 4.GB.30 | Wölsendorfite | Pb7(UO2)14O19(OH)4 · 12H2O |
| 4.GB.35 | Masuyite | Pb(UO2)3O3(OH)2 · 3H2O |
| 4.GB.40 | Metavandendriesscheite | PbU7O22 · nH2O n < 12 |
| 4.GB.40 | Vandendriesscheite | PbU7O22 · 12H2O |
| 4.GB.45 | Vandenbrandeite | Cu(UO2)(OH)4 |
| 4.GB.50 | Sayrite | Pb2(UO2)5O6(OH)2 · 4H2O |
| 4.GB.55 | Curite | Pb3(H2O)2[(UO2)4O4(OH)3]2 |
| 4.GB.65 | Uranosphaerite | Bi(UO2)O2(OH) |
| 4.GB.70 | Holfertite | CaxU6+2-xTi(O8-xOH4x) · 3H2O |
| 4.GB.75 | Carlosbarbosaite | (UO2)2Nb2O6(OH)2 · 2H2O |
| 4.GB.80 | Gauthierite | KPb[(UO2)7O5(OH)7] · 8H2O |
| 4.GB.85 | Kroupaite | KPb0.5[(UO2)8O4(OH)10] · 10H2O |
| 4.GB.90 | Leesite | K(H2O)2[(UO2)4O2(OH)5] · 3H2O |
| 4.GB.95 | Shinkolobweite | Pb1.25[U5+(H2O)2(U6+O2)5O8(OH)2](H2O)5 |
| 4.GB.95 | Nollmotzite | Mg[U5+(U6+O2)2O4F3] · 4H2O |
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 Iriginite
mindat.org URL:
https://www.mindat.org/min-2046.html
Please feel free to link to this page.
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References for Iriginite
Reference List:
Jambor, John L., Roberts, Andrew C., Puziewicz, Jacek (1994) New Mineral Names. American Mineralogist, 79 (5-6) 570-574
Krivovichev, S. V., Burns, P. C. (2000) Crystal chemistry of uranyl molybdates. II. The crystal structure of iriginite. The Canadian Mineralogist, 38 (4) 847-851 doi:10.2113/gscanmin.38.4.847
Localities for Iriginite
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 | |
| Sue Koepke collection +3 other references |
Canada | |
| Richard Gunter specimen |
Czech Republic | |
| Bull mineral petrolog 27 +3 other references |
DR Congo | |
| 304 [287-288]. +2 other references |
France | |
| Bariand et al. (1993) +1 other reference |
| Georges FAVREAU collection & EDX ... |
Germany | |
| Gröbner et al. (2007) +1 other reference |
Kazakhstan | |
| Yegorov et al. (1970) +1 other reference |
| Pekov (1998) |
Mexico | |
| Analysis by and from the collection of ... +1 other reference |
Niger | |
| Mamadou et al. (2022) |
| Bohari et al. (2022) | |
Russia (TL) | |
| Pekov (1998) |
| Chernyshev et al. (2019) |
Slovakia | |
| Ferenc Š. et al. (2019) |
South Africa | |
| Cairncross et al. (1995) |
USA | |
| Anthony et al. (1995) |
| Anthony et al. (1995) | |
| Eckel et al. (1997) |
| Roberts et al. (1965) |
| - (2005) |
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Majerská valley U occurrence, Čučma, Rožňava District, Košice Region, Slovakia