Belakovskiite
A valid IMA mineral species
This page kindly sponsored by Mark Kucera
About Belakovskiite
Formula:
Na7(UO2)(SO4)4(SO3OH)(H2O)3
Colour:
Yellow green
Lustre:
Vitreous, Sub-Vitreous
Hardness:
2
Specific Gravity:
2.953 (Calculated)
Crystal System:
Triclinic
Name:
Named in 2013 by Anthony R. Kampf, Jakub Plášil, Anatoly V. Kasatkin, and Joseph Marty in honor of Dimitrii Ilyich Belakovskii (Дмитрий Ильич Белаковский) (b. 4 September 1957), mineralogist and curator of the Fersman Mineralogical Museum, Moscow, Russia.
Third uranyl hydrosulfate after meisserite and later discovered seaborgite. Further similarity to fermiite, klaprothite, natrozippeite, oppenheimerite, ottohahnite, péligotite, and plášilite.
Unique Identifiers
Mindat ID:
45960
Long-form identifier:
mindat:1:1:45960:0
GUID
(UUID V4):
(UUID V4):
e46872fc-5771-4f97-aab4-c00b940dd704
IMA Classification of Belakovskiite
Approved
Approval year:
2013
First published:
2014
Classification of Belakovskiite
7.E0.
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
E : Uranyl sulfates
0 :
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
E : Uranyl sulfates
0 :
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Bkk | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Belakovskiite
Vitreous, Sub-Vitreous
Transparency:
Transparent
Colour:
Yellow green
Streak:
White
Hardness:
2 on Mohs scale
Comment:
Estimated
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.953 g/cm3 (Calculated)
Optical Data of Belakovskiite
Type:
Biaxial (+)
RI values:
nα = 1.500 nβ = 1.511 nγ = 1.523
2V:
Measured: 87° , Calculated: 88°
Birefringence:
0.023
Max Birefringence:
δ = 0.023
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Optical Extinction:
X ~ a.
Pleochroism:
Non-pleochroic
Chemistry of Belakovskiite
Mindat Formula:
Na7(UO2)(SO4)4(SO3OH)(H2O)3
Crystallography of Belakovskiite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 5.4581(3) Å, b = 11.3288(6) Å, c = 18.4163(13) Å
α = 104.786(7)°, β = 90.092(6)°, γ = 96.767(7)°
α = 104.786(7)°, β = 90.092(6)°, γ = 96.767(7)°
Ratio:
a:b:c = 0.482 : 1 : 1.626
Unit Cell V:
1,092.77 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Hair-like fibers, elongated on [100] and slightly flattened on {021}.
Comment:
P1¯
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0020475 | Belakovskiite | Kampf A R, Plasil J, Kasatkin A V, Marty J (2014) Belakovskiite, Na7(UO2)(SO4)4(SO3OH)(H2O)3, a new uranyl sulfate mineral from the Blue Lizard mine, San Juan County, Utah, USA Mineralogical Magazine 78 639-649 | 2014 | Blue Lizard mine, San Juan County, Utah, USA | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
8.96 Å | (35) |
8.46 Å | (29) |
5.19 Å | (100) |
4.66 Å | (58) |
3.568 Å | (37) |
3.057 Å | (59) |
2.930 Å | (27) |
1.832 Å | (29) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
47f : [Uranyl (U⁶⁺) minerals] | |
Stage 10b: Anthropogenic minerals | <10 Ka |
55 : Anthropogenic mine minerals |
Type Occurrence of Belakovskiite
General Appearance of Type Material:
Yellow green acicular crystals. Crystals of belakovskiite are very pale yellowish-green hair-like fibres up to 2 mm long and usually no more than a few μm in diameter. The fibres are elongated on [100] and slightly flattened on {021}.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Natural History Museum of Los Angeles County, Los Angeles, California, USA, catalogue number 64055, and the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration
Geological Setting of Type Material:
Sandstone/siltstone layers containing uraninite and secondary copper mineralssecodndary species.
Associated Minerals at Type Locality:
Reference:
Kampf, A.R., Plášil, J., Kasatkin, A.V., Marty, J. (2014) Belakovskiite, Na7(UO2)(SO4)4(SO3OH)(H2O)3, a new uranyl sulfate mineral from the Blue Lizard mine, San Juan County, Utah, USA. Mineralogical Magazine: 78: 639-649.
Synonyms of Belakovskiite
Common Associates
Associated Minerals Based on Photo Data:
2 photos of Belakovskiite associated with Sandstone | |
2 photos of Belakovskiite associated with Lussierite | Na10[(UO2)(SO4)4](SO4)2 · 3(H2O) |
1 photo of Belakovskiite associated with Ivsite | Na3H(SO4)2 |
1 photo of Belakovskiite associated with Sideronatrite | Na2Fe(SO4)2(OH) · 3H2O |
1 photo of Belakovskiite associated with Bobcookite | NaAl(UO2)2(SO4)4 · 18H2O |
1 photo of Belakovskiite associated with Meisserite | Na5(UO2)(SO4)3(SO3OH)(H2O) |
Related Minerals - Strunz-mindat Grouping
7.E0. | Běhounekite | U(SO4)2(H2O)4 |
Other Information
Notes:
Water soluble.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Belakovskiite
mindat.org URL:
https://www.mindat.org/min-45960.html
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Please feel free to link to this page.
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References for Belakovskiite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No 18. Mineralogical Magazine, 77 (8) 3249-3258 doi:10.1180/minmag.2013.077.8.15
Localities for Belakovskiite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
USA (TL) | |
| Williams et al. (2013) +2 other references |
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Blue Lizard Mine, Red Canyon Mining District, San Juan County, Utah, USA