Chelyabinskite
A material that is NOT an approved mineral species
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Formula:
(Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?)
Colour:
White
Lustre:
Silky, Dull
Hardness:
3
Specific Gravity:
1.908 - 1.912
Crystal System:
Orthorhombic
Name:
After the area of occurrence, the Chelyabinsk coal basin, Urals Region, Russia.
A substance of anthropogenic origin (burning coal mine dumps). Current IMA regulations do not allow such substances to be validated as mineral species.
A questionable mineral, possessing many properties and values of, and possibly identical to Thaumasite.
Originally reported from Chelyabinsk coal basin, Chelyabinsk Oblast', Urals Region, Russia.
A questionable mineral, possessing many properties and values of, and possibly identical to Thaumasite.
Originally reported from Chelyabinsk coal basin, Chelyabinsk Oblast', Urals Region, Russia.
Unique Identifiers
Mindat ID:
6864
Long-form identifier:
mindat:1:1:6864:8
IMA Classification of Chelyabinskite
IMA status notes:
Rejected by the IMA
Approval history:
Rejected by IMA: 1986
Classification of Chelyabinskite
7.DG.45
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
G : With large and medium-sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
G : With large and medium-sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3
Physical Properties of Chelyabinskite
Silky, Dull
Transparency:
Opaque
Colour:
White
Hardness:
3 on Mohs scale
Density:
1.908 - 1.912 g/cm3 (Measured) 1.938 g/cm3 (Calculated)
Optical Data of Chelyabinskite
Type:
Biaxial
RI values:
nα = 1.475 nβ = 1.495 nγ = 1.508
2V:
Measured: 77° , Calculated: 76°
Max. Birefringence:
δ = 0.033
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Dispersion:
none
Chemistry of Chelyabinskite
Mindat Formula:
(Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?)
Element Weights:
Crystallography of Chelyabinskite
Crystal System:
Orthorhombic
Cell Parameters:
a = 19.01 Å, b = 20.93 Å, c = 22.45 Å
Ratio:
a:b:c = 0.908 : 1 : 1.073
Unit Cell V:
8,932.39 ų (Calculated from Unit Cell)
Z:
18
Other Language Names for Chelyabinskite
German:Chelyabinskit
Spanish:Chelyabinskita
Related Minerals - Strunz-mindat Grouping
| 7.DG. | Mathesiusite | K5(UO2)4(SO4)4(VO5) · 4H2O |
| 7.DG.05 | Darapskite | Na3(SO4)(NO3) · H2O |
| 7.DG.10 | Clinoungemachite | (Na, K, Fe, SO4) |
| 7.DG.10 | Humberstonite | Na7K3Mg2(SO4)6(NO3)2 · 6H2O |
| 7.DG.10 | Ungemachite | K3Na8Fe(SO4)6(NO3)2 · 6H2O |
| 7.DG.15 | Chiyokoite | Ca3Si(CO3)[B(OH)4]O (OH)5 · 12H2O |
| 7.DG.15 | Kottenheimite | Ca 3Si(SO4)2(OH)6 · 12H2O |
| 7.DG.15 | Hielscherite | Ca3Si(SO4)(SO3)(OH)6 · 11H2O |
| 7.DG.15 | Jouravskite | Ca3Mn4+(SO4)(CO3)(OH)6 · 12H2O |
| 7.DG.15 | Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| 7.DG.15 | Bentorite | Ca6Cr2(SO4)3(OH)12 · 26H2O |
| 7.DG.15 | Carraraite | Ca3(SO4)[Ge(OH)6](CO3) · 12H2O |
| 7.DG.15 | Ettringite | Ca6Al2(SO4)3(OH)12 · 26H2O |
| 7.DG.15 | Birunite | Ca18(SiO3)8.5(CO3)8.5SO4 · 15H2O(?) |
| 7.DG.15 | Siwaqaite | Ca6Al2(CrO4)3(OH)12 · 26H2O |
| 7.DG.15 | Buryatite | Ca3(Si,Fe3+,Al)(SO4)B(OH)4(OH,O)6 · 12H2O |
| 7.DG.15 | Charlesite | Ca6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O |
| 7.DG.15 | Tatarinovite | Ca3Al(SO4)[B(OH)4](OH)6 · 12H2O |
| 7.DG.15 | Imayoshiite | Ca3Al(CO3)[B(OH)4](OH)6 · 12H2O |
| 7.DG.15 | Sturmanite | Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25H2O |
| 7.DG.20 | Rapidcreekite | Ca2(SO4)(CO3) · 4H2O |
| 7.DG.25 | Tatarskite | Ca6Mg2(SO4)2(CO3)2(OH)4Cl4 · 7H2O |
| 7.DG.30 | Nakauriite | Cu8(SO4)4(CO3)(OH)6 · 48H2O |
| 7.DG.35 | Chessexite | (Na,K)4Ca2(Mg,Zn)3Al8(SO4)10(SiO4)2 · 40H2O |
| 7.DG.40 | Fuenzalidaite | K6(Na,K)4Na6Mg10(SO4)12(IO3)12 · 12H2O |
| 7.DG.40 | Carlosruizite | K6(Na,K)4Na6Mg10(SeO4)12(IO3)12 · 12H2O |
| 7.DG.55 | Ramazzoite | [Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36] |
| 7.DG.60 | Witzkeite | Na4K4Ca(NO3)2(SO4)4 · 2H2O |
Fluorescence of Chelyabinskite
Bluish white fluorescence (UV).
Other Information
Notes:
Boils intensely in HCl, leaving a siliceous residue.
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 Chelyabinskite
mindat.org URL:
https://www.mindat.org/min-6864.html
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Please feel free to link to this page.
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References for Chelyabinskite
Localities for Chelyabinskite
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Russia | |
| Mineralogical Magazine 60:527 |
| Cesnokov et al. (1998) |
| Pekov (1998) |