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Iriginite

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Big Photo

Cameron, Cameron District, Coconino Co., Arizona, USA
© Thomas Witzke

Show Iriginite Photos (6)



Formula:
(UO
 
2
)Mo
 
2
O
 
7
 · 3H
 
2
O
System:OrthorhombicColour:Canary yellow
Hardness:1 - 2
Name:The author liked the sound of the name.
This page provides mineralogical data about Iriginite.

Classification of Iriginite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:6/G.06-40
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:49.2.3.1

49 : HYDRATED MOLYBDATES AND TUNGSTATES
2 : Hydrated Normal Molybdates and Tungstates
Hey's CIM Ref.:27.3.7

27 : Sulphites, Chromates, Molybdates and Tungstates
3 : Molybdates
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Type Occurrence of Iriginite

Type Locality:Aleksandrovskii Golets Mo-U occurrence, Torgo River Basin, Chara and Tokko Rivers Confluence, Aldan Shield, Saha Republic (Sakha Republic; Yakutia), Eastern-Siberian Region, Russia
Year of Discovery:1959

Physical Properties of Iriginite

Lustre:Vitreous, Dull
Colour:Canary yellow
Streak:Light yellow
Hardness (Mohs):1 - 2

Crystallography of Iriginite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pbcm {P2/b 21/c 21/m}
Cell Parameters:a = 12.77Å, b = 6.71Å, c = 11.53Å
Ratio:a:b:c = 1.903 : 1 : 1.718
Unit Cell Volume:V 987.97 ų (Calculated from Unit Cell)

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°
Maximum Birefringence:δ = 0.200

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r > v

Chemical Properties of Iriginite

Formula:
(UO
 
2
)Mo
 
2
O
 
7
 · 3H
 
2
O
Essential elements:H, Mo, O, U
All elements listed in formula:H, Mo, O, U

Relationship of Iriginite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.GB.05Agrinierite
K
 
2
(Ca,Sr)(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 5H
 
2
O
4.GB.05Compreignacite
K
 
2
(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 7H
 
2
O
4.GB.05Rameauite
K
 
2
Ca(UO
 
2
)
 
6
(OH)
 
16
 · H
 
2
O
4.GB.10Becquerelite
Ca(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 8H
 
2
O
4.GB.10Billietite
Ba(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 4-8H
 
2
O
4.GB.10Protasite
Ba(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 3H
 
2
O
4.GB.15Richetite
Pb(UO
 
2
)
 
4
O
 
5
 · 4H
 
2
O
4.GB.20Bauranoite
Ba(UO
 
2
)
 
2
(OH)
 
6
 · 1-2H
 
2
O
4.GB.20Calciouranoite
(Ca,Ba,Pb)U
 
2
O
 
7
 · 5H
 
2
O
4.GB.20Metacalciouranoite
(Ca,Ba,Pb,K
 
2
)U
 
2
O
 
7
 · 2H
 
2
O
4.GB.25Fourmarierite
Pb(UO
 
2
)
 
4
O
 
3
(OH)
 
4
 · 4H
 
2
O
4.GB.30Wölsendorfite
(Pb,Ca)U
 
2
O
 
7
 · 2H
 
2
O
4.GB.35Masuyite
Pb(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 3H
 
2
O
4.GB.40Metavandendriesscheite
PbU
 
7
O
 
22
 · nH
 
2
O n < 12
4.GB.40Vandendriesscheite
PbU
 
7
O
 
22
 · 12H
 
2
O
4.GB.45Vandenbrandeite
Cu(UO
 
2
)(OH)
 
4
4.GB.50Sayrite
Pb
 
2
(UO
 
2
)
 
5
O
 
6
(OH)
 
2
 · 4H
 
2
O
4.GB.55Curite
Pb
 
3
(UO
 
2
)
 
8
O
 
8
(OH)
 
6
 · 3H
 
2
O
4.GB.65Uranosphaerite
Bi(UO
 
2
)O
 
2
(OH)
4.GB.70Holfertite
Ca
 
x
U
6+
2-x
Ti(O
 
8-x
OH
 
4x
) · 3H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
27.3.1Lindgrenite
Cu
 
3
(MoO
 
4
)
 
2
(OH)
 
2
27.3.2Powellite
Ca(MoO
 
4
)
27.3.3Wulfenite
Pb(MoO
 
4
)
27.3.4Koechlinite
Bi
 
2
MoO
 
6
27.3.5Sedovite
U(MoO
 
4
)
 
2
27.3.6Mourite
UMo
 
5
O
 
12
(OH)
 
10
27.3.8Umohoite
(UO
 
2
)MoO
 
4
 · 2H
 
2
O
27.3.9Moluranite
H
 
4
U
4+
 
(UO
 
2
)
 
3
(MoO
 
4
)
 
7
 · 18H
 
2
O
27.3.10Cousinite
MgU
 
2
Mo
 
2
O
 
11
 · 6H
 
2
O
27.3.11Calcurmolite
(Ca,Na)
 
2
(UO
 
2
)
 
3
Mo
 
2
(O,OH)
 
11
 · nH
 
2
O
27.3.12Tengchongite
CaO · 6UO
 
3
 · 2MoO
 
3
 · 12H
 
2
O
27.3.13Kamiokite
Fe
 
2
Mo
 
3
O
 
8
27.3.14Ferrimolybdite
Fe
 
2
(MoO
 
4
)
 
3
 · nH
 
2
O

Other Names for Iriginite

Other Languages:
German:Iriginit
Russian:Иригинит
Spanish:Iriginita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Iriginite

Reference List:

- +
American Mineralogist: 45: 257.

American Mineralogist (1994): 79: 573-574.

Krivovichev, S.V. and Burns, P.C. (2000b) Crystal chemistry of uranyl molybdates. II. The crystal structure of iriginite. Canadian Mineralogist: 38: 847-851.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 88: 564-570.

Materialy VSEGEI: 45: 117-124.

Doklady Akademii Nauk SSSR: 210: 873-876.

Burns, P.C. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Internet Links for Iriginite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Iriginite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
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    • Localities for Iriginite

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? 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.
    Canada
     
    • Nunavut Territory
      • south of Baker Lake
    		Richard Gunter specimen
    Democratic Republic of Congo (Zaïre)
     
    • Katanga (Shaba)
      • Katanga Copper Crescent
        • Shinkolobwe
    		Mineralogical Record: 20: 287-288.
    France
     
    • Languedoc-Roussillon
      • Hérault
        • Lodève
    		[Le Règne Minéral 1997, 13, p.5-18]
    Germany
     
    • Saxony
      • Vogtland
        • Oelsnitz
    		Gröbner, J. and Kolitsch, U. (2007): The minerals of the uranium prospect at Tirpersdorf, Vogtland. Lapis 32, 37-42; 58. (in German)
    Kazakhstan
     
    • Almaty Province (Almaty Oblysy; Almati Oblast')
      • Chu-Ili Mts
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    • Karagandy Province (Qaragandy Oblysy; Karaganda Oblast')
      • Balkhash (Balqash; Karatas; Prebalkhashie) Region
        • Mointy (Moyynty)
          • Mointy Railway Station
            • Shunak Mts
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Mexico
     
    • Sonora
      • Mun. de Bacoachi
        • Bacoachi
    		Analysis by and from the collection of Sid Williams.
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
        • Aldan Shield
          • Chara and Tokko Rivers Confluence
            • Torgo River Basin
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    South Africa
     
    • Western Cape Province
      • Central Karoo District
        • Beaufort West
    		Minerals of South Africa
    USA
     
    • Arizona
      • Coconino Co.
        • Cameron District
          • Cameron area
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 260.
    • Colorado
      • San Juan Co.
        • Elk Park
    		Minerals of Colorado (1997) Eckels, E. B.
    • South Dakota
      • Pennington Co.
        • Scenic
    		SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
    Mineral and/or Locality
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