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Bijvoetite-(Y)

Big Photo

Bikita, Masvingo (Fort Victoria), Masvingo, Zimbabwe
© Knut Eldjarn

Formula:
(Y,Dy)
 
2
(UO
 
2
)
 
4
[(OH)
 
6
|(CO
 
3
)
 
2
] · 11H
 
2
O
System:MonoclinicColour:Yellow
Lustre:VitreousHardness:2
Name:Named after M. Bijvoet
This page provides mineralogical data about Bijvoetite-(Y).

Classification of Bijvoetite-(Y)

IMA status:Approved 1981
Strunz 8th edition ID:5/F.06-30
Nickel-Strunz 10th (pending) edition ID:5.EB.20

5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
B : UO2:CO3 = 1:1
Dana 8th edition ID:16b.2.4.1

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
2 : AmBn(XO3)pZqxH2O & with (m+n):p = 3:2
Hey's CIM Ref.:11.11.18

11 : Carbonates
11 : Carbonates of Cr and U
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Type Occurrence of Bijvoetite-(Y)

Type Locality:Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

Physical Properties of Bijvoetite-(Y)

Lustre:Vitreous
Colour:Yellow
Streak:Light yellow
Hardness (Mohs):2

Crystallography of Bijvoetite-(Y)

Crystal System:Monoclinic

Optical Data of Bijvoetite-(Y)

Type:Biaxial (+)
RI values: nα = 1.600 nβ = 1.650 nγ = 1.722
2V:Measured: 84° , Calculated: 84°
Maximum Birefringence:δ = 0.122

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

Chemical Properties of Bijvoetite-(Y)

Formula:
(Y,Dy)
 
2
(UO
 
2
)
 
4
[(OH)
 
6
|(CO
 
3
)
 
2
] · 11H
 
2
O
Essential elements:C, H, O, U, Y
All elements listed in formula:C, Dy, H, O, U, Y

Relationship of Bijvoetite-(Y) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.EB.05Rutherfordine
(UO
 
2
)[CO
 
3
]
5.EB.10Blatonite
(UO
 
2
)[CO
 
3
] · H
 
2
O
5.EB.15Joliotite
(UO
 
2
)[CO
 
3
] · nH
 
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
11.11.8Wyartite
Ca
 
3
U
4+
 
(UO
 
2
)
 
6
[(OH)
 
9
|CO
 
3
]
 
2
 · 3-5H
 
2
O
11.11.9Urancalcarite
Ca(UO
 
2
)
 
3
[(OH)
 
6
|CO
 
3
] · 3H
 
2
O
11.11.10Sharpite
Ca(UO
 
2
)
 
6
[(OH)
 
4
|(CO
 
3
)
 
5
] · 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
[(OH)
 
4
|(CO
 
3
)
 
6
] · 18H
 
2
O
11.11.15Kamotoite-(Y)
Y
 
2
(UO
 
2
)
 
4
[O
 
4
|(CO
 
3
)
 
3
] · 14H
 
2
O
11.11.16Shabaite-(Nd)
Ca(Nd,Sm,Y)
 
2
(UO
 
2
)[(OH)
 
2
|(CO
 
3
)
 
4
] · 6H
 
2
O
11.11.17Astrocyanite-(Ce)
Cu
 
2
(Ce,Nd,La)
 
2
(UO
 
2
)[(OH)
 
2
|(CO
 
3
)
 
5
] · 1.5H
 
2
O
11.11.19Widenmannite
Pb
 
2
(UO
 
2
)[CO
 
3
]
 
3
11.11.20Znucalite
Zn
 
12
Ca(UO
 
2
)[(OH)
 
22
|(CO
 
3
)
 
3
] · 4H
 
2
O

Other Names for Bijvoetite-(Y)

Synonyms:
IMA1981-035
Other Languages:
German:Bijvoetit-(Y)

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 Bijvoetite-(Y)

Reference List:American Mineralogist (1983): 68: 1248.

Li, Y., P.C. Burns, and Gault, R.A. (2000), A new rare-earth element uranyl carbonate sheet in the structure of bijvoetite-(Y). Canadian Mineralogist: 38: 153-162.

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

Articles/Blogs about Bijvoetite-(Y)

Internet Links for Bijvoetite-(Y)

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    Localities for Bijvoetite-(Y)

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    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.
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    (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.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Ústí Region
        • Krušné Hory Mts (Erzgebirge)
          • Dubí
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)]
    Democratic Republic of Congo (Zaïre)
     
    • Katanga (Shaba)
      • Katanga Copper Crescent
        • Central area
          • Shinkolobwe
    		Canadian Mineralogist (1982): 20: 231-238; Nickel & Nichols, 1991 - "Mineral Reference Manual", p22]
    Zimbabwe
     
    • Masvingo
      • Masvingo (Fort Victoria)
    		[Clark, 1993 - "Hey's Mineral Index"]
    Mineral and/or Locality
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