VOOZH about

URL: https://www.mindat.org/min-2046.html

⇱ Iriginite: Mineral information, data and localities.

👁 Image
Now Featuring: The Bruce Carter Collection at Heritage Auctions, Live May 16th
Log InRegister
AboutSupport UsPhotosDiscussionsSearchLearnMore

Iriginite

A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.

About IriginiteHide

This section is currently hidden. Click the show button to view.
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. The Handbook of Mineralogy states: "A euphonious construction, devoid of connotation."
This page provides mineralogical data about Iriginite.


Unique IdentifiersHide

This section is currently hidden. Click the show button to view.
Mindat ID:
2046
Long-form identifier:
mindat:1:1:2046:2

Similar NamesHide

This section is currently hidden. Click the show button to view.
AragoniteA valid IMA mineral species - grandfatheredCaCO3
OregoniteA valid IMA mineral speciesNi2FeAs2

IMA Classification of IriginiteHide

This section is currently hidden. Click the show button to view.
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
(UO2)Mo6+2O7 · 3H2O

Classification of IriginiteHide

This section is currently hidden. Click the show button to view.
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
49.2.3.1

49 : HYDRATED MOLYBDATES AND TUNGSTATES
2 : Hydrated Normal Molybdates and Tungstates
27.3.7

27 : Sulphites, Chromates, Molybdates and Tungstates
3 : Molybdates

Mineral SymbolsHide

This section is currently hidden. Click the show button to view.
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
IrgIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of IriginiteHide

This section is currently hidden. Click the show button to view.
Vitreous, Dull
Colour:
Canary yellow
Streak:
Light yellow
Hardness:
1 - 2 on Mohs scale

Optical Data of IriginiteHide

This section is currently hidden. Click the show button to view.
Type:
Biaxial (-)
RI values:
nα = 1.73 - 1.764 nβ = 1.82 - 1.889 nγ = 1.93 - 1.936
2V:
Measured: 60° , Calculated: 58° to 90°
Max. Birefringence:
δ = 0.172 - 0.200
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.

Surface Relief:
Moderate
Dispersion:
r > v

Chemistry of IriginiteHide

This section is currently hidden. Click the show button to view.
Mindat Formula:
(UO2)Mo2O7 · 3H2O
Element Weights:
Element% weight
U37.903 %
O30.573 %
Mo30.561 %
H0.963 %

Calculated from ideal end-member formula.

Crystallography of IriginiteHide

This section is currently hidden. Click the show button to view.
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/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 StructureHide

This section is currently hidden. Click the show button to view.
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File    Best | x | y | z | a | b | c
Rotation
Stop | Start
Labels
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005691IriginiteKrivovichev S V, Burns P C (2000) The crystal chemistry of uranyl molybdates. II. the crystal structure of iriginite The Canadian Mineralogist 38 847-851👁 Image
20000293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

This section is currently hidden. Click the show button to view.
Powder Diffraction Data:
d-spacingIntensity
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 EnvironmentHide

This section is currently hidden. Click the show button to view.
Paragenetic Mode(s):

Type Occurrence of IriginiteHide

This section is currently hidden. Click the show button to view.
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:

Synonyms of IriginiteHide

This section is currently hidden. Click the show button to view.

Other Language Names for IriginiteHide

This section is currently hidden. Click the show button to view.
Dutch:Iriginiet
German:Iriginit
Spanish:Iriginita

Common AssociatesHide

This section is currently hidden. Click the show button to view.
Associated Minerals Based on Photo Data:
9 photos of Iriginite associated with Umohoite(UO2)MoO4 · 2H2O
8 photos of Iriginite associated with MouriteUMo5O12(OH)10
4 photos of Iriginite associated with CalcurmoliteCa[(UO2)3(MoO4)2(OH)4](H2O)~5.0
4 photos of Iriginite associated with IlsemanniteMo3O8 · nH2O
2 photos of Iriginite associated with Melkovite[Ca2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O36(OH)]
2 photos of Iriginite associated with JarositeKFe3+3(SO4)2(OH)6
2 photos of Iriginite associated with FerrimolybditeFe2(MoO4)3 · nH2O
2 photos of Iriginite associated with GypsumCaSO4 · 2H2O
2 photos of Iriginite associated with FluoriteCaF2
2 photos of Iriginite associated with 'Unnamed (Hydrous Zr Molybdate)'Zr-Mo-O-OH

Related Minerals - Strunz-mindat GroupingHide

This section is currently hidden. Click the show button to view.
4.GB.05RameauiteK2Ca(UO2)6O6(OH)4 · 6H2OMon. m : Bb
4.GB.05AgrinieriteK2(Ca,Sr)[(UO2)3O3(OH)2]2 · 5H2OMon. m : Bm
4.GB.05CompreignaciteK2(UO2)6O4(OH)6 · 7H2OOrth. mmm(2/m2/m2/m) : Pnnm
4.GB.10BecquereliteCa(UO2)6O4(OH)6 · 8H2OOrth. mm2 : Pna21
4.GB.10BillietiteBa(UO2)6O4(OH)6 · 4-8H2OOrth. mm2
4.GB.10ProtasiteBa(UO2)3O3(OH)2 · 3H2OMon. m
4.GB.15Richetite(Fe3+,Mg)Pb 8.6(UO2)36O36(OH)24 · 41H2O Tric. 1 : P1
4.GB.20Calciouranoite(Ca,Ba,Pb)U2O7 · 5H2O
4.GB.20BauranoiteBa(UO2)2(OH)6 · 1-2H2O
4.GB.20Metacalciouranoite(Ca,Ba,Pb,K2)U2O7 · 2H2O
4.GB.25FourmarieritePb(UO2)4O3(OH)4 · 4H2OOrth. mm2
4.GB.30WölsendorfitePb7(UO2)14O19(OH)4 · 12H2OOrth. mmm(2/m2/m2/m) : Cmcm
4.GB.35MasuyitePb(UO2)3O3(OH)2 · 3H2OOrth. mmm(2/m2/m2/m)
4.GB.40VandendriesscheitePbU7O22 · 12H2OOrth. mmm(2/m2/m2/m) : Pbca
4.GB.40MetavandendriesscheitePbU7O22 · nH2O n < 12Orth.
4.GB.45VandenbrandeiteCu(UO2)(OH)4Tric. 1 : P1
4.GB.50SayritePb2(UO2)5O6(OH)2 · 4H2OMon. 2/m
4.GB.55CuritePb3(H2O)2[(UO2)4O4(OH)3]2Orth. mmm(2/m2/m2/m) : Pnma
4.GB.65UranosphaeriteBi(UO2)O2(OH)Mon. 2/m
4.GB.70HolfertiteCaxU6+2-xTi(O8-xOH4x) · 3H2OTrig. 3 : P3
4.GB.75Carlosbarbosaite(UO2)2Nb2O6(OH)2 · 2H2OOrth. mmm(2/m2/m2/m) : Cmcm
4.GB.80GauthieriteKPb[(UO2)7O5(OH)7] · 8H2OMon. 2/m : P21/b
4.GB.85KroupaiteKPb0.5[(UO2)8O4(OH)10] · 10H2OOrth. mmm(2/m2/m2/m) : Pbca
4.GB.90LeesiteK(H2O)2[(UO2)4O2(OH)5] · 3H2OOrth. mmm(2/m2/m2/m) : Pbca
4.GB.95ShinkolobweitePb1.333[U5+O(OH)(UO2)5O4.67(OH)5.33](H2O)5Orth. mmm(2/m2/m2/m) : Pnnm
4.GB.95NollmotziteMg[U5+(U6+O2)2O4F3] · 4H2OMon. m : Bm

RadioactivityHide

This section is currently hidden. Click the show button to view.

Other InformationHide

This section is currently hidden. Click the show button to view.
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 IriginiteHide

This section is currently hidden. Click the show button to view.
mindat.org URL:
https://www.mindat.org/min-2046.html
Please feel free to link to this page.

References for IriginiteHide

This section is currently hidden. Click the show button to view.
Reference List:

Localities for IriginiteHide

This section is currently hidden. Click the show button to view.

Showing 23 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 👁 Image
symbol to view information about a locality. The 👁 Image
symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

This section is currently hidden. Click the show button to view.
👁 Image
- This locality has map coordinates listed. 👁 Image
- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 👁 Image
- Good crystals or important locality for species. 👁 Image
- 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.
Australia
  • Queensland
    • Charters Towers Region
Sue Koepke collection +3 other references
Canada
  • Nunavut
    • Kivalliq Region
      • Baker Lake
Richard Gunter specimen
Czech Republic
  • Ústí nad Labem Region
    • Teplice District
      • Krupka
        • Vrchoslav
Bull mineral petrolog 27 +2 other references
DR Congo
  • Haut-Katanga
    • Kambove Territory
      • Shinkolobwe
304 [287-288]. +2 other references
France
  • Occitanie
    • Hérault
      • Lodève
        • Le Puech
Bariand et al. (1993) +1 other reference
  • Provence-Alpes-Côte d'Azur
    • Var
      • Toulon
        • Le Pradet
Favreau et al. (2024)
Georges FAVREAU collection & EDX ... +1 other reference
Germany
  • Saxony
    • Vogtlandkreis
Gröbner et al. (2007) +1 other reference
Kazakhstan
  • Karaganda Region
    • Shet District
      • Moyynty
        • Mointy Railway Station
          • Shunak Mountains
Yegorov et al. (1970) +1 other reference
  • Ulytau Region
    • Ulytau District
      • Chu-Ili Mountains
Pekov (1998)
Mexico
  • Sonora
    • Bacoachi Municipality
      • Bacoachi
Analysis by and from the collection of ... +1 other reference
Niger
  • Agadez
    • Arlit
Mamadou et al. (2022)
Bohari et al. (2022)
Russia (TL)
  • Aldan Shield
    • Chara and Tokko Rivers Confluence
      • Torgo River Basin
Pekov (1998)
  • Zabaykalsky Krai
    • Krasnokamensky District
      • Krasnokamensk
        • Strel'tsovskoe Mo-U ore field
Chernyshev et al. (2019)
Slovakia
  • Košice Region
    • Rožňava District
      • Čučma
Števko M. et al. (2025) +1 other reference
South Africa
  • Western Cape
    • Central Karoo District Municipality
      • Beaufort West Local Municipality
        • Beaufort West
Cairncross et al. (1995)
USA
  • Arizona
    • Coconino County
      • Cameron Mining District
Anthony et al. (1995)
Anthony et al. (1995)
  • Colorado
    • San Juan County
      • Elk Park
Eckel et al. (1997)
    • San Miguel County
Tony Kampf Identification
  • South Dakota
    • Pennington County
      • Scenic
Roberts et al. (1965)
  • Texas
    • Karnes County
      • Karnes Uranium Mining District
- (2005)
Quick NavTopAbout IriginiteUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatRadioactivityOther InformationInternet Links References Localities Locality List
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 4, 2026 08:19:30 Page updated: March 9, 2026 10:58:32
Go to top of page