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Wyartite

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Formula:
CaU
5+
 
(UO
 
2
)
 
2
(CO
 
3
)O
 
4
(OH) · 7H
 
2
O
System:OrthorhombicColour:Black, violet-black ...
Lustre:Vitreous, Sub-Metallic, DullHardness:3 - 4
Name:Named after Jean Wyart (1902-1992), Professor of Mineralogy, Sorbonne, Paris, France. [Obituary: http://journals.iucr.org/a/issues/1992/04/00/es0175/es0175.pdf]
This page provides mineralogical data about Wyartite.

Classification of Wyartite

IMA status:Approved
Strunz 8th edition ID:5/F.05-10
Nickel-Strunz 10th (pending) edition ID:5.EA.15

5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
A : UO2:CO3 > 1:1
Dana 8th edition ID:16b.7.4.1

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
Hey's CIM Ref.:11.11.8

11 : Carbonates
11 : Carbonates of Cr and U
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Type Occurrence of Wyartite

Type Locality:Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)
Year of Discovery:1959

Physical Properties of Wyartite

Lustre:Vitreous, Sub-Metallic, Dull
Diaphaneity (Transparency):Transparent, Translucent, Opaque
Colour:Black, violet-black (fresh); yellowish brown, greenish brown (exposed)
Hardness (Mohs):3 - 4

Crystallography of Wyartite

Crystal System:Orthorhombic
Cell Parameters:a = 11.25Å, b = 7.1Å, c = 20.8Å
Ratio:a:b:c = 1.585 : 1 : 2.93
Unit Cell Volume:V 1,661.40 ų (Calculated from Unit Cell)

Optical Data of Wyartite

Type:Biaxial (-)
RI values: nα = 1.890 nγ = 1.910
2V:Measured: 48°
Maximum Birefringence:δ = 0.020

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:strong

Chemical Properties of Wyartite

Formula:
CaU
5+
 
(UO
 
2
)
 
2
(CO
 
3
)O
 
4
(OH) · 7H
 
2
O
Simplified for copy/paste:CaU5+(UO2)2(CO3)O4(OH)·7H2O
Essential elements:C, Ca, H, O, U
All elements listed in formula:C, Ca, H, O, U

Relationship of Wyartite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.EA.05UM1997-24-CO:CaCuHU
Ca
 
2
Cu(UO
 
2
)
 
2
(CO
 
3
)
 
2
O
 
3
· 3H
 
2
O
5.EA.10Urancalcarite
Ca(UO
 
2
)
 
3
(CO
 
3
)(OH)
 
6
· 3H
 
2
O
5.EA.20Oswaldpeetersite
(UO
 
2
)
 
2
(CO
 
3
)(OH)
 
2
· 4H
 
2
O
5.EA.25Roubaultite
Cu
 
2
(UO
 
2
)
 
3
(OH)
 
10
· 5H
 
2
O
5.EA.30Kamotoite-(Y)
Y
 
2
(UO
 
2
)
 
4
(CO
 
3
)
 
3
O
 
4
· 14H
 
2
O
5.EA.35Sharpite
Ca(UO
 
2
)
 
6
(CO
 
3
)
 
5
(OH)
 
4
· 6H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
11.11.1Stichtite
Mg
 
6
Cr
 
2
(OH)
 
16
[CO
 
3
] · 4H
 
2
O
11.11.2Rutherfordine
(UO
 
2
)CO
 
3
11.11.3Joliotite
(UO
 
2
)CO
 
3
· nH
 
2
O
11.11.4Grimselite
K
 
3
Na(UO
 
2
)(CO
 
3
)
 
3
· H
 
2
O
11.11.5Bayleyite
Mg
 
2
(UO
 
2
)(CO
 
3
)
 
3
· 18H
 
2
O
11.11.6Metazellerite
Ca(UO
 
2
)(CO
 
3
)
 
2
· 3H
 
2
O
11.11.7Zellerite
Ca(UO
 
2
)(CO
 
3
)
 
2
· 5H
 
2
O
11.11.9Urancalcarite
Ca(UO
 
2
)
 
3
(CO
 
3
)(OH)
 
6
· 3H
 
2
O
11.11.10Sharpite
Ca(UO
 
2
)
 
6
(CO
 
3
)
 
5
(OH)
 
4
· 6H
 
2
O
11.11.11Voglite
Ca
 
2
Cu(UO
 
2
)(CO
 
3
)
 
4
· 6H
 
2
O
11.11.12Andersonite
Na
 
2
Ca(UO
 
2
)(CO
 
3
)
 
3
· 6H
 
2
O
11.11.13Swartzite
MgCa(UO
 
2
)(CO
 
3
)
 
3
· 12H
 
2
O
11.11.14Rabbittite
Ca
 
3
Mg
 
3
(UO
 
2
)
 
2
(CO
 
3
)
 
6
(OH)
 
4
· 18H
 
2
O
11.11.15Kamotoite-(Y)
Y
 
2
(UO
 
2
)
 
4
(CO
 
3
)
 
3
O
 
4
· 14H
 
2
O
11.11.16Shabaite-(Nd)
Ca(Nd,Sm,Y)
 
2
(UO
 
2
)(CO
 
3
)
 
4
(OH)
 
2
· 6H
 
2
O
11.11.17Astrocyanite-(Ce)
Cu
 
2
(Ce,Nd,La)
 
2
(UO
 
2
)(CO
 
3
)
 
5
(OH)
 
2
· 1.5H
 
2
O
11.11.18Bijvoetite-(Y)
(Y,Dy)
 
2
(UO
 
2
)
 
4
(CO
 
3
)
 
4
(OH)
 
6
· 11H
 
2
O
11.11.19Widenmannite
Pb
 
2
(UO
 
2
)(CO
 
3
)
 
3
11.11.20Znucalite
Zn
 
12
Ca(UO
 
2
)(CO
 
3
)
 
3
(OH)
 
22
· 4H
 
2
O

Other Names for Wyartite

Synonyms:
Ianthinite (of Bignand)
Other Languages:
German:Wyartit
Russian:Виартит
Spanish:Wyartita

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 Wyartite

Reference List:

- +
Bulletin de la Société française de Minéralogie et de Cristallographie (1959): 82: 80-86.

American Mineralogist (1959): 44: 908.

Burns, P.C. and Finch, R.J. (1999) Wyartite: crystallographic evidence for the first pentavalent-uranium mineral. American Mineralogist (1999): 84: 1456-1460.

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 Wyartite

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

    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.
    Australia
     
    • Northern Territory
      • Alligator Rivers Region
    R.L. Frost, D.A. Henry, and K. Erickson, Raman spectroscopic detection of wyartite in the presence of rabejacite. Journal of Raman Spectroscopy, 2004. 35(4): p. 255- 260.
    R.L. Frost, D.A. Henry, and K. Erickson, Raman spectroscopic detection of wyartite in the presence of rabejacite. Journal of Raman Spectroscopy, 2004. 35(4): p. 255- 260.
    Democratic Republic of Congo (Zaïre)
     
    • Katanga (Shaba)
      • Katanga Copper Crescent
        • Shinkolobwe
    [MinRec 20:288]; Burns, P.C. and Finch, R.J. (1999) Wyartite: crystallographic evidence for the first pentavalent-uranium mineral. American Mineralogist (1999): 84: 1456-1460.
    France
     
    • Rhône-Alpes
      • Loire
        • Saint-Just-en-Chevalet
          • Saint-Priest-la-Prugne
    Le Règne Minéral, Hors Série IV, 1998
    J.-J. Périchaud: "Où trouver les minéraux d'Auvergne", Vol. 1, Editions l'Instant Durable (Clermont-Ferrand), 1985, p. 92
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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