Svyatoslavite
A valid IMA mineral species
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About Svyatoslavite
Svyatoslav N. Ivanov
Formula:
Ca(Al2Si2O8)
Colour:
Colourless
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
2.695
Crystal System:
Monoclinic
Member of:
Name:
Named after Svyatoslav Nostorovich Ivanov (Святослав Нестерович Иванов) (3[16] February 1911, Nizhny Novgorod, Russian Empire - 13 October 2003, Yekaterinburg, Russia), geologist, director of the Urals Scientific Center, Academy of Sciences, Sverdlovsk (Russia).
Type Locality:
Polymorph of:
Unique Identifiers
Mindat ID:
3840
Long-form identifier:
mindat:1:1:3840:5
IMA Classification of Svyatoslavite
Approved
Approval year:
1988
First published:
1989
Classification of Svyatoslavite
9.FA.45
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
76.1.6.4
76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
76 : TECTOSILICATES Al-Si Framework
1 : Al-Si Framework with Al-Si frameworks
16.9.4
16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca
16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca
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 for Standard |
|---|---|---|
| Svy | 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 Svyatoslavite
Vitreous
Transparency:
Transparent
Colour:
Colourless
Streak:
White
Hardness:
6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
Poor on {100}
Poor on {100}
Fracture:
Conchoidal
Density:
2.695(5) g/cm3 (Measured) 2.687 g/cm3 (Calculated)
Comment:
Measured in heavy liquids.
Optical Data of Svyatoslavite
Type:
Biaxial (-)
RI values:
nα = 1.552(2) nβ = 1.578(2) nγ = 1.581(2)
2V:
Measured: 37° , Calculated: 36°
Max. Birefringence:
δ = 0.029
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:
weak to distinct
Comments:
Z = a, Y = b, X = c
Chemistry of Svyatoslavite
Mindat Formula:
Ca(Al2Si2O8)
Element Weights:
Elements listed:
Common Impurities:
Fe,Mg,Na,K
Crystallography of Svyatoslavite
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
P21
Cell Parameters:
a = 8.232(5) Å, b = 8.606(10) Å, c = 4.852(5) Å
Ratio:
a:b:c = 0.957 : 1 : 0.564
Unit Cell V:
0.00 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Type material: Elongate [100] with the main forms being {011} and {100}. {110} is common, but weakly developed.
Comment:
Pseudo-orthorhombic. Space group P1211. Formerly assumed to be P21212.
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0019485 | Svyatoslavite | Krivovichev S V, Shcherbakova E P, Nishanbaev T P (2012) The crystal structure of svyatoslavite and evolution of complexity during crystallization of a CaAl2Si2O8 melt: A structural automata description The Canadian Mineralogist 50 585-592 | 2012 | mine #45 near Kopeysk, Chelyabinsk area, southern Urals, Russia | 0 | 293 | |
| 0019486 | Svyatoslavite | Takeuchi Y, Haga N, Ito J (1973) The crystal structure of monoclinic CaAl2Si2O8: a case of monoclinic structure closely simulating orthorhombic symmetry Zeitschrift fur Kristallographie 137 380-398 |  | 1973 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.16 Å | (80) |
| 3.75 Å | (60) |
| 3.22 Å | (100) |
| 2.94 Å | (60) |
| 2.71 Å | (70) |
| 2.09 Å | (80) |
| 1.967 Å | (70) |
| 1.670 Å | (70) |
| 1.329 Å | (60) |
| 1.150 Å | (50) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 50 : Coal and/or oil shale minerals | <0.36 |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 54 : Coal and other mine fire minerals (see also #51 and #56) |
Type Occurrence of Svyatoslavite
General Appearance of Type Material:
Colorless prismatic crystals up to 0.5 to 0.8 mm.
Place of Conservation of Type Material:
1) Il’menskii Preserve Museum, Miass, Russia, 16243vr.
2) A. E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.
2) A. E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.
Geological Setting of Type Material:
Burning coal dumps, at temperatures not below 700-900°C, as a sublimate on fracture walls in coal.
Associated Minerals at Type Locality:
Synonyms of Svyatoslavite
Other Language Names for Svyatoslavite
Relationship of Svyatoslavite to other Species
Member of:
Other Members of Feldspar Group:
| Alkali Feldspar | A subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium. | |
| Buddingtonite | (NH4)(AlSi3O8) | Mon. 2 : P21 |
| Celsian | Ba(Al2Si2O8) | Mon. 2/m |
| Filatovite | K(Al,Zn)2(As,Si)2O8 | Mon. 2/m |
| Hexacelsian | BaAl2Si2O8 | Hex. 6/mmm(6/m2/m2/m) : P63/mcm |
| Kokchetavite | K(AlSi3O8) | Hex. 6/mmm(6/m2/m2/m) : P6/mcc |
| Kumdykolite | Na(AlSi3O8) | Orth. mmm(2/m2/m2/m) : Pnnm |
| Paracelsian | Ba(Al2Si2O8) | Mon. 2/m : P21/b |
| Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 | |
| Reedmergnerite | NaBSi3O8 | Tric. 1 : P1 |
| Slawsonite | Sr(Al2Si2O8) | Mon. 2/m : P21/b |
| 'Unnamed (New Ordered Member of the Alkali Feldspar Series)' | KNa(Si6Al2)O16 | Mon. m |
Related Minerals - Strunz-mindat Grouping
| 9.FA. | Bonaccorsiite | KK2Na3(Al6Si36)O84 |
| 9.FA. | Hexacelsian | BaAl2Si2O8 |
| 9.FA. | Wodegongjieite | KCa3(Al7Si9)O32 |
| 9.FA.05 | Panunzite | (K,Na)AlSiO4 |
| 9.FA.05 | Yoshiokaite | (Ca,Na)[Al(Al,Si)O4] |
| 9.FA.05 | Nepheline | Na3K(Al4Si4O16) |
| 9.FA.05 | Trinepheline | NaAlSiO4 |
| 9.FA.05 | Davidsmithite | (Ca,◻)2Na6Al8Si8O32 |
| 9.FA.05 | Kaliophilite | KAlSiO4 |
| 9.FA.05 | Kalsilite | KAlSiO4 |
| 9.FA.05 | 'Carnegieite' | NaAlSiO4 |
| 9.FA.05 | Megakalsilite | KAlSiO4 |
| 9.FA.05 | Trikalsilite | K2NaAl3(SiO4)3 |
| 9.FA.10 | Malinkoite | NaBSiO4 |
| 9.FA.15 | Virgilite | LiAlSi2O6 |
| 9.FA.25 | Lisitsynite | KBSi2O6 |
| 9.FA.30 | Ferrisanidine | K[Fe3+Si3O8] |
| 9.FA.30 | Buddingtonite | (NH4)(AlSi3O8) |
| 9.FA.30 | Rubicline | Rb(AlSi3O8) |
| 9.FA.30 | 'Monalbite' | NaAlSi3O8 |
| 9.FA.30 | Microcline | K(AlSi3O8) |
| 9.FA.30 va | 'Germanate-celsian' | BaAl2Ge2O8 |
| 9.FA.30 | Celsian | Ba(Al2Si2O8) |
| 9.FA.30 | Sanidine | K(AlSi3O8) |
| 9.FA.30 | Orthoclase | K(AlSi3O8) |
| 9.FA.35 | Reedmergnerite | NaBSi3O8 |
| 9.FA.35 | Albite | Na(AlSi3O8) |
| 9.FA.35 | Anorthite | Ca(Al2Si2O8) |
| 9.FA.40 | Paracelsian | Ba(Al2Si2O8) |
| 9.FA.45 | Kumdykolite | Na(AlSi3O8) |
| 9.FA.50 | Slawsonite | Sr(Al2Si2O8) |
| 9.FA.55 | Lisetite | CaNa2Al4Si4O16 |
| 9.FA.60 | Stronalsite | Na2SrAl4Si4O16 |
| 9.FA.60 | Banalsite | Na2BaAl4Si4O16 |
| 9.FA.65 | Maleevite | BaB2Si2O8 |
| 9.FA.65 | Pekovite | SrB2Si2O8 |
| 9.FA.65 | Danburite | CaB2Si2O8 |
| 9.FA.70 | Liebermannite | KAlSi3O8 |
| 9.FA.70 | Lingunite | NaAlSi3O8 |
| 9.FA.70 | Stöfflerite | CaAl2Si2O8 |
| 9.FA.75 | Pfaffenbergite | KNa3(Al4Si12)O32 |
| 9.FA.75 | Kokchetavite | K(AlSi3O8) |
Fluorescence of Svyatoslavite
Fluoresces weakly yellowish in 360 nm UV.
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.
Internet Links for Svyatoslavite
mindat.org URL:
https://www.mindat.org/min-3840.html
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References for Svyatoslavite
Reference List:
Takéuchi, Y., Haga, N., Ito, J. (1973) The crystal structure of monoclinic CaAl2Si2O8: a case of monoclinic structure closely simulating orthorhombic symmetry. Zeitschrift für Kristallographie, 137 (5-6). 380-398 doi:10.1524/zkri.1973.137.5-6.380
Localities for Svyatoslavite
Showing 1 localities.
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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 (TL) | |
| Chesnokov et al. (1989) +2 other references |
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Coal mine No. 45, Kopeysk, Chelyabinsk Oblast, Russia