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Bijvoetite-(Y)

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Johannes Martin Bijvoet [1892–1980]
Formula:
Y8(UO2)16(CO3)16O8(OH)8 · 39H2O
Structural formula (Li et al., 2000): [M83+(H2O)25(UO2)16O8(OH)8(CO3)16](H2O)14, where M= (Y,REE)
Colour:
Yellow
Lustre:
Vitreous
Hardness:
2
Crystal System:
Monoclinic
Name:
Named in 1982 by Michel Deliens and Paul Piret in honor of Johannes Martin Bijvoet [1892–1980], Dutch crystallographer.
It is one of four Y-UO2-minerals, and one of four Y-U natural salts, beside alwilkinsite-(Y), sejkoraite-(Y) (sulphates) and kamotoite-(Y) (also a carbonate).

As shown by a study of Plášil & Petříček (2016), the crystal structures of bijvoetite-(Y) and kamotoite-(Y) are the same. However, the identity of these two minerals is not yet confirmed, since the type material of bijvoetite-(Y) has not been studied yet.


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Classification of Bijvoetite-(Y)Hide

Approved
Approval Year:
1981
5.EB.20

5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
B : UO2:CO3 = 1:1
16b.2.4.1

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

11 : Carbonates
11 : Carbonates of Cr and U

Physical Properties of Bijvoetite-(Y)Hide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Yellow
Streak:
Light yellow
Hardness:
Cleavage:
Distinct/Good
{001)

Optical Data of Bijvoetite-(Y)Hide

Type:
Biaxial (+)
RI values:
nα = 1.600 nβ = 1.650 nγ = 1.722
2V:
Measured: 84° , Calculated: 83°
Max Birefringence:
δ = 0.122
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v weak
Comments:
Colorless (X), pale yellow (Y), deep yellow (Z)

Chemical Properties of Bijvoetite-(Y)Hide

Formula:
Y8(UO2)16(CO3)16O8(OH)8 · 39H2O

Structural formula (Li et al., 2000): [M83+(H2O)25(UO2)16O8(OH)8(CO3)16](H2O)14, where M= (Y,REE)
IMA Formula:
Y8(UO2)16O8(CO3)16(OH)8 · 39H2O
Common Impurities:
Nd,Sm,Gd,Dy

Crystallography of Bijvoetite-(Y)Hide

Crystal System:
Monoclinic

Type Occurrence of Bijvoetite-(Y)Hide

Synonyms of Bijvoetite-(Y)Hide

Other Language Names for Bijvoetite-(Y)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Cassiterite1 photo of Bijvoetite-(Y) associated with Cassiterite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

5.EB.05Rutherfordine(UO2)CO3Orth. mm2 : Imm2
5.EB.10Blatonite(UO2)CO3 · H2OHex.
5.EB.15Joliotite(UO2)CO3 · nH2OOrth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

11.11.1StichtiteMg6Cr3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
11.11.2Rutherfordine(UO2)CO3Orth. mm2 : Imm2
11.11.3Joliotite(UO2)CO3 · nH2OOrth.
11.11.4GrimseliteK3Na(UO2)(CO3)3 · H2OHex.
11.11.5BayleyiteMg2(UO2)(CO3)3 · 18H2OMon.
11.11.6MetazelleriteCa(UO2)(CO3)2 · 3H2OOrth.
11.11.7ZelleriteCa(UO2)(CO3)2 · 5H2OOrth.
11.11.8WyartiteCaU5+(UO2)2(CO3)O4(OH) · 7H2OOrth.
11.11.9UrancalcariteCa(UO2)3(CO3)(OH)6 · 3H2OOrth.
11.11.10SharpiteCa(UO2)6(CO3)5(OH)4 · 6H2OOrth.
11.11.11VogliteCa2Cu(UO2)(CO3)4 · 6H2OMon.
11.11.12AndersoniteNa2Ca(UO2)(CO3)3 · 6H2OTrig. 3 : R3
11.11.13SwartziteMgCa(UO2)(CO3)3 · 12H2OMon. 2/m : P21/m
11.11.14RabbittiteCa3Mg3(UO2)2(CO3)6(OH)4 · 18H2OMon.
11.11.15Kamotoite-(Y)Y2(UO2)4(CO3)3O4 · 14H2OMon. 2/m
11.11.16Shabaite-(Nd)Ca(Nd,Sm,Y)2(UO2)(CO3)4(OH)2 · 6H2O
11.11.17Astrocyanite-(Ce)Cu2(Ce,Nd,La)2(UO2)(CO3)5(OH)2 · 1.5H2OHex.
11.11.19WidenmannitePb2(OH)2[(UO2)(CO3)2]Orth.
11.11.20ZnucaliteZn12Ca(UO2)(CO3)3(OH)22 · 4H2OOrth.

Other InformationHide

Health Risks:
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)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Deliens, M., Piret, P. (1982): Bijvoetite et lepersonnite, carbonates hydrat ́es d’uranyle et de terres rares de Shinkolobwe, Za ̈ıre. Canadian Mineralogist: 20: 231–238 (in French with English abs.); American Mineralogist (1983): 68: 1248.
Li, Y., Burns, P.C., 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)" U6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.
Plášil, J. & Petříček, V. (2017): Crystal structure of the (REE)-uranyl carbonate mineral kamotoite-(Y). Mineralogical Magazine, 81, 653-660.

Internet Links for Bijvoetite-(Y)Hide

Localities for Bijvoetite-(Y)Hide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Ústí Region
      • Krušné Hory Mts (Erzgebirge)
        • Dubí (Eichwald)
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) (TL)
 
  • Katanga (Shaba)
    • Katanga Copper Crescent
      • Shinkolobwe
Canadian Mineralogist (1982): 20: 231-238; Nickel & Nichols, 1991 - "Mineral Reference Manual", p22]
Finland
 
  • Northern Finland Region
    • Kuusamo
Al-Ani, Thair and Pakkanen, Lassi (2013): Mini-Atlas of REE-minerals in Finnish Bedrocks. Geologian Tutkimuskeskus/Geological Survey of Finland.
Zimbabwe
 
  • Masvingo
    • Bikita area
[Clark, 1993 - "Hey's Mineral Index"]
Mineral and/or Locality  
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