Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Bijvoetite-(Y)

This page is currently not sponsored. Click here to sponsor this page.
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)
System:
Monoclinic
Colour:
Yellow
Lustre:
Vitreous
Hardness:
2
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) and kamotoite-(Y).

Classification of Bijvoetite-(Y)

Approved 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
mindat.org URL:
http://www.mindat.org/min-669.html
Please feel free to link to this page.

Type Occurrence of Bijvoetite-(Y)

General Appearance of Type Material:
platy

Physical Properties of Bijvoetite-(Y)

Vitreous
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Yellow
Streak:
Light yellow
Hardness (Mohs):
2
Cleavage:
Distinct/Good
{001)

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: 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)

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)
All elements listed in formula:
Common Impurities:
Nd,Sm,Gd,Dy

Relationship of Bijvoetite-(Y) to other Species

5.EB.05Rutherfordine(UO2)CO3
5.EB.10Blatonite(UO2)CO3 · H2O
5.EB.15Joliotite(UO2)CO3 · nH2O
11.11.1StichtiteMg6Cr2(OH)16[CO3] · 4H2O
11.11.2Rutherfordine(UO2)CO3
11.11.3Joliotite(UO2)CO3 · nH2O
11.11.4GrimseliteK3Na(UO2)(CO3)3 · H2O
11.11.5BayleyiteMg2(UO2)(CO3)3 · 18H2O
11.11.6MetazelleriteCa(UO2)(CO3)2 · 3H2O
11.11.7ZelleriteCa(UO2)(CO3)2 · 5H2O
11.11.8WyartiteCaU5+(UO2)2(CO3)O4(OH) · 7H2O
11.11.9UrancalcariteCa(UO2)3(CO3)(OH)6 · 3H2O
11.11.10SharpiteCa(UO2)6(CO3)5(OH)4 · 6H2O
11.11.11VogliteCa2Cu(UO2)(CO3)4 · 6H2O
11.11.12AndersoniteNa2Ca(UO2)(CO3)3 · 6H2O
11.11.13SwartziteMgCa(UO2)(CO3)3 · 12H2O
11.11.14RabbittiteCa3Mg3(UO2)2(CO3)6(OH)4 · 18H2O
11.11.15Kamotoite-(Y)Y2(UO2)4(CO3)3O4 · 14H2O
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 · 1.5H2O
11.11.19WidenmannitePb2(OH)2[(UO2)(CO3)2]
11.11.20ZnucaliteZn12Ca(UO2)(CO3)3(OH)22 · 4H2O

Other Names for Bijvoetite-(Y)

Name in Other Languages:

Other Information

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)

Reference List:
Deliens, Michel and Paul Piret (1982) Bijvoetite et lepersonnite, carbonates hydrat ́es d’uranyle et de terres rares de Shinkolobwe, Za ̈ıre. Can. Mineral., 20, 231–238 (in French with
English abs.).
American Mineralogist (1983): 68: 1248.
Li, Y., Peter C. Burns, and Gault, Robert A. (2000), A new rare-earth element uranyl carbonate sheet in the structure of bijvoetite-(Y). Canadian Mineralogist: 38: 153-162.
Burns, Peter 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 Bijvoetite-(Y)

Localities for Bijvoetite-(Y)

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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 (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  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2016, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: May 24, 2016 08:56:41 Page generated: May 11, 2016 12:52:48