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Iriginite

Big Photo

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

Show Iriginite Photos (4)
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, Chara River (Charo River), Davan, Torgo River Basin, 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
PbU
 
4
O
 
13
·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
PbU
 
4
O
 
13
·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+x
(H
 
2
O)
 
2
[(UO
 
2
)
 
4
O
 
4+x
(OH)
 
3-x
]
 
2
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
[OH|MoO
 
4
]
 
2
27.3.2Powellite
Ca[MoO
 
4
]
27.3.3Wulfenite
Pb[MoO
 
4
]
27.3.4Koechlinite
(BiO)
 
2
[MoO
 
4
]
27.3.5Sedovite
U(MoO
 
4
)
 
2
27.3.6Mourite
UMo
 
5
O
 
12
(OH)
 
10
27.3.8Umohoite
(UO
 
2
)MoO
 
4
·4H
 
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
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  • Iriginite details from Handbook of Mineralogy (PDF)
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    Localities for Iriginite

    Hide Locality List
    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.
    (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.
    Democratic Republic of Congo (Zaïre)
     
    • Katanga (Shaba)
      • Katanga Copper Crescent
        • Central area
          • 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
     
    • Zhezqazghan Oblysy (Dzezkazgan Oblast'; Dzhezkazgan Oblast'; Djezkazgan Oblast'; Jezkazgan Oblast')
      • Balqash (Balkhash; Karatas; Prebalkhashie) Region
        • Chu-Ili Mts
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
        • Mointy (Moyynty)
          • Mointy Railway Station
            • Shunak Mt
    		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
          • Torgo River Basin
            • Davan
              • Chara River (Charo River)
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    South Africa
     
    • Western Cape Province
      • Beaufort West District
    		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
    Google
     
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