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
GUID
(UUID V4):
(UUID V4):
bc833847-9833-45b0-a960-155fc3d3ce54
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
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:
Moderate
Dispersion:
none
Chemistry of Chelyabinskite
Mindat Formula:
(Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?)
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 | Bentorite | Ca6Cr2(SO4)3(OH)12 · 26H2O |
7.DG.15 | Charlesite | Ca6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O |
7.DG.15 | Ettringite | Ca6Al2(SO4)3(OH)12 · 26H2O |
7.DG.15 | Jouravskite | Ca3Mn4+(SO4)(CO3)(OH)6 · 12H2O |
7.DG.15 | Sturmanite | Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25H2O |
7.DG.15 | Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
7.DG.15 | Carraraite | Ca3(SO4)[Ge(OH)6](CO3) · 12H2O |
7.DG.15 | Buryatite | Ca3(Si,Fe3+,Al)(SO4)B(OH)4(OH,O)6 · 12H2O |
7.DG.15 | Birunite | Ca18(SiO3)8.5(CO3)8.5SO4 · 15H2O(?) |
7.DG.15 | Hielscherite | Ca3Si(SO4)(SO3)(OH)6 · 11H2O |
7.DG.15 | Kottenheimite | Ca 3Si(SO4)2(OH)6 · 12H2O |
7.DG.15 | Imayoshiite | Ca3Al(CO3)[B(OH)4](OH)6 · 12H2O |
7.DG.15 | Tatarinovite | Ca3Al(SO4)[B(OH)4](OH)6 · 12H2O |
7.DG.15 | Siwaqaite | Ca6Al2(CrO4)3(OH)12 · 26H2O |
7.DG.15 | Chiyokoite | Ca3Si(CO3)[B(OH)4]O (OH)5 · 12H2O |
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 | Carlosruizite | K6(Na,K)4Na6Mg10(SeO4)12(IO3)12 · 12H2O |
7.DG.40 | Fuenzalidaite | K6(Na,K)4Na6Mg10(SO4)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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References for Chelyabinskite
Localities for Chelyabinskite
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.
Russia | |
| Mineralogical Magazine 60:527 |
| Cesnokov et al. (1998) |
Pekov (1998) |