Srebrodolskite
A valid IMA mineral species
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About Srebrodolskite
Boris I. Srebrodolsky
Formula:
Ca2Fe3+2O5
Colour:
Black
Lustre:
Adamantine, Metallic
Hardness:
5½
Specific Gravity:
4.04
Crystal System:
Orthorhombic
Name:
Named in honour of Boris Ivanovich Srebrodolsky (Борис Иванович Сребродольский) (27 March 1927, Ukraine - 2007), mineralogist, Institute of Geology and Geochemistry, Lvov (Ukraine). He has authored more than 500 publications, including popular science books.
Type Locality:
Brownmillerite-Srebrodolskite Series. Common in metacarbonate slags, i.e., in burning coal-mining waste heaps.
Compare gorerite.
Compare gorerite.
Unique Identifiers
Mindat ID:
3736
Long-form identifier:
mindat:1:1:3736:1
IMA Classification of Srebrodolskite
Classification of Srebrodolskite
4.AC.10
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
A : Metal: Oxygen = 2:1 and 1:1
C : M:O = 1:1 (and up to 1:1.25); with large cations (+- smaller ones)
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
A : Metal: Oxygen = 2:1 and 1:1
C : M:O = 1:1 (and up to 1:1.25); with large cations (+- smaller ones)
7.20.13
7 : Oxides and Hydroxides
20 : Oxides of Fe
7 : Oxides and Hydroxides
20 : Oxides of Fe
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Sre | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Srebrodolskite
Adamantine, Metallic
Comment:
Crystals=adamantine, aggregates=metallic
Colour:
Black
Streak:
Grayish brown
Hardness:
5½ on Mohs scale
Density:
4.04(1) g/cm3 (Measured) 4.03 g/cm3 (Calculated)
Optical Data of Srebrodolskite
Type:
Biaxial (-)
RI values:
nα = 2.24 nβ = 2.25 nγ = 2.27
Max. Birefringence:
δ = 0.030
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:
relatively strong
Pleochroism:
Weak
Comments:
Strongly colored brown yellow and brown red.
The optic plane is perpendicular to (010), and X is parallel to [010] and bisects the larger angle.
The optic plane is perpendicular to (010), and X is parallel to [010] and bisects the larger angle.
Chemistry of Srebrodolskite
Mindat Formula:
Ca2Fe3+2O5
Element Weights:
Elements listed:
Crystallography of Srebrodolskite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pnma
Cell Parameters:
a = 5.420(3) Å, b = 14.752(3) Å, c = 5.594(3) Å
Ratio:
a:b:c = 0.367 : 1 : 0.379
Unit Cell V:
447.27 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals platy to tabular, flattened along (010). Corner angles are about 92° 30' and 87° 30'.
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) |
|---|---|---|---|---|---|---|---|
| 0017766 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 0.0001 | 293 | |
| 0017759 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 0.0001 | 293 | |
| 0003432 | Srebrodolskite | Redhammer G J, Tippelt G, Roth G, Amthauer G (2004) Structural variations in the brownmillerite series Ca2(Fe2-xAlx)O5: Single-crystal X-ray diffraction at 25 deg C and high temperature X-ray powder diffraction (25 C <= T <= 1000 C) American Mineralogist 89 405-420 |  | 2004 | synthetic | 0 | 293 |
| 0003431 | Srebrodolskite | Redhammer G J, Tippelt G, Roth G, Amthauer G (2004) Structural variations in the brownmillerite series Ca2(Fe2-xAlx)O5: Single-crystal X-ray diffraction at 25 deg C and high temperature X-ray powder diffraction (25 C <= T <= 1000 C) American Mineralogist 89 405-420 | | 2004 | synthetic | 0 | 293 |
| 0003430 | Srebrodolskite | Redhammer G J, Tippelt G, Roth G, Amthauer G (2004) Structural variations in the brownmillerite series Ca2(Fe2-xAlx)O5: Single-crystal X-ray diffraction at 25 deg C and high temperature X-ray powder diffraction (25 C <= T <= 1000 C) American Mineralogist 89 405-420 | | 2004 | synthetic | 0 | 293 |
| 0003429 | Srebrodolskite | Redhammer G J, Tippelt G, Roth G, Amthauer G (2004) Structural variations in the brownmillerite series Ca2(Fe2-xAlx)O5: Single-crystal X-ray diffraction at 25 deg C and high temperature X-ray powder diffraction (25 C <= T <= 1000 C) American Mineralogist 89 405-420 | | 2004 | synthetic | 0 | 293 |
| 0003428 | Srebrodolskite | Redhammer G J, Tippelt G, Roth G, Amthauer G (2004) Structural variations in the brownmillerite series Ca2(Fe2-xAlx)O5: Single-crystal X-ray diffraction at 25 deg C and high temperature X-ray powder diffraction (25 C <= T <= 1000 C) American Mineralogist 89 405-420 | | 2004 | synthetic | 0 | 293 |
| 0003427 | Srebrodolskite | Redhammer G J, Tippelt G, Roth G, Amthauer G (2004) Structural variations in the brownmillerite series Ca2(Fe2-xAlx)O5: Single-crystal X-ray diffraction at 25 deg C and high temperature X-ray powder diffraction (25 C <= T <= 1000 C) American Mineralogist 89 405-420 | | 2004 | synthetic | 0 | 293 |
| 0003426 | Srebrodolskite | Redhammer G J, Tippelt G, Roth G, Amthauer G (2004) Structural variations in the brownmillerite series Ca2(Fe2-xAlx)O5: Single-crystal X-ray diffraction at 25 deg C and high temperature X-ray powder diffraction (25 C <= T <= 1000 C) American Mineralogist 89 405-420 | | 2004 | synthetic | 0 | 293 |
| 0003425 | Srebrodolskite | Redhammer G J, Tippelt G, Roth G, Amthauer G (2004) Structural variations in the brownmillerite series Ca2(Fe2-xAlx)O5: Single-crystal X-ray diffraction at 25 deg C and high temperature X-ray powder diffraction (25 C <= T <= 1000 C) American Mineralogist 89 405-420 | | 2004 | synthetic | 0 | 293 |
| 0017767 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 2.015 | 293 | |
| 0017760 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 2.249 | 293 | |
| 0017768 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 3.729 | 293 | |
| 0017761 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 3.863 | 293 | |
| 0017762 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 5.564 | 293 | |
| 0017769 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 6.267 | 293 | |
| 0017763 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 6.326 | 293 | |
| 0017764 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 8.167 | 293 | |
| 0017770 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 8.89 | 293 | |
| 0017765 | Srebrodolskite | Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F (2008) The effect of oxygen vacancies and aluminium substitution on the high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5 Physics and Chemistry of Minerals 35 493-504 | 2008 | synthetic | 9.73 | 293 | |
| 0006827 | Srebrodolskite | Kahlenberg V, Fischer R X (2000) Crystal growth and cation distribution in doped dicalcium ferrite Ca2(Fe1-xMex)2O5 (Me=Al,Ga) European Journal of Mineralogy 12 129-135 | 2000 | 0 | 293 | ||
| 0006826 | Srebrodolskite | Kahlenberg V, Fischer R X (2000) Crystal growth and cation distribution in doped dicalcium ferrite Ca2(Fe1-xMex)2O5 (Me=Al,Ga) European Journal of Mineralogy 12 129-135 | 2000 | 0 | 293 | ||
| 0011930 | Srebrodolskite | Berggren J (1971) Refinement of the crystal structure of dicalcium ferrite, Ca2Fe2O5 Acta Chemica Scandinavica 25 3616-3624 | 1971 | 0 | 293 | ||
| 0016894 | Srebrodolskite | Bertaut E, Blum P, Sagnieres A (1959) Structure du ferrite bicalcique et de la brownmillerite _cod_database_code 1009033 Acta Crystallographica 12 149-159 |  | 1959 | 0 | 293 | |
| 0016066 | Srebrodolskite | Bertaut E, Blum P, Sagnieres A (1959) Structure du Ferrite Bicalcique et de la Brownmillerite _cod_database_code 1008124 Acta Crystallographica 12 149-159 | | 1959 | 0 | 293 | |
| 0016654 | Srebrodolskite | Bertaut F, Blum P, Sagnieres A (1958) La structure du ferrite dicalcique et de la brownmillerite, aussi bien que 'Errata'. _cod_database_code 1008778 Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences 246 658-658 | 1958 | 0 | 293 | ||
| 0016653 | Srebrodolskite | Bertaut F, Blum P, Sagnieres A (1957) La structure du ferrite dicalcique et de la Brownmillerite. _cod_database_code 1008777 Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences 244 2944-2946 | 1957 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.381 Å | (100) |
| 3.690 Å | (100) |
| 2.797 Å | (60) |
| 2.710 Å | (60) |
| 2.676 Å | (100) |
| 1.946 Å | (70) |
| 1.844 Å | (100) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 31 : Thermally altered carbonate, phosphate, and iron formations | |
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 50 : Coal and/or oil shale minerals | <0.36 |
| 51 : Pyrometamorphic minerals (see also #54 and #56) | <0.36 |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 54 : Coal and other mine fire minerals (see also #51 and #56) | |
| 56 : Slag and smelter minerals (see also #51 and #55) |
Type Occurrence of Srebrodolskite
General Appearance of Type Material:
Grains generally less than 0.1 mm across.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow.
Geological Setting of Type Material:
Occurs in petrified wood baked by burning coal. Derived from the calcining of ankerite.
Associated Minerals at Type Locality:
Synonyms of Srebrodolskite
Other Language Names for Srebrodolskite
Relationship of Srebrodolskite to other Species
Other Members of Brownmillerite Subgroup:
| Brownmillerite | Ca2Fe3+AlO5 | Orth. mm2 |
| Nataliakulikite | Ca4Ti2(Fe3+,Fe2+)(Si,Fe3+,Al)O11 | Orth. mmm(2/m2/m2/m) : Pnma |
| Sharyginite | Ca3TiFe2O8 | Orth. mm2 : Pmc21 |
| Shulamitite | Ca3TiFe3+AlO8 | Orth. mmm(2/m2/m2/m) : Pmma |
Forms a series with:
Common Associates
Associations Based on Photo Data:
| 6 photos of Srebrodolskite associated with Larnite | Ca2SiO4 |
| 5 photos of Srebrodolskite associated with Fluorellestadite | Ca5(SiO4)1.5(SO4)1.5F |
| 5 photos of Srebrodolskite associated with Gazeevite | BaCa6(SiO4)2(SO4)2O |
| 4 photos of Srebrodolskite associated with Gehlenite | Ca2Al[AlSiO7] |
| 4 photos of Srebrodolskite associated with Magnesioferrite | MgFe3+2O4 |
| 4 photos of Srebrodolskite associated with Periclase | MgO |
| 3 photos of Srebrodolskite associated with Aragonite | CaCO3 |
| 2 photos of Srebrodolskite associated with Ye'elimite | Ca4Al6(SO4)O12 |
| 2 photos of Srebrodolskite associated with Fluorite | CaF2 |
| 2 photos of Srebrodolskite associated with Fluorapatite | Ca5(PO4)3F |
Related Minerals - Strunz-mindat Grouping
| 4.AC.05 | Swedenborgite | NaBe4Sb5+O7 |
| 4.AC.10 | Brownmillerite | Ca2Fe3+AlO5 |
| 4.AC.10 | Shulamitite | Ca3TiFe3+AlO8 |
| 4.AC.10 | Sharyginite | Ca3TiFe2O8 |
| 4.AC.15 | Montroydite | HgO |
| 4.AC.20 | Romarchite | SnO |
| 4.AC.20 | Litharge | PbO |
| 4.AC.25 | Massicot | PbO |
| 4.AC.30 | Nataliakulikite | Ca4Ti2(Fe3+,Fe2+)(Si,Fe3+,Al)O11 |
Fluorescence of Srebrodolskite
Not fluorescent
Other Information
Thermal Behaviour:
No thermal effects in DTA curve to 1000°C.
Fusibility ~4.5.
Fusibility ~4.5.
Notes:
Weakly magnetic.
Soluble in HCl.
Soluble in HCl.
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 Srebrodolskite
mindat.org URL:
https://www.mindat.org/min-3736.html
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References for Srebrodolskite
Reference List:
Bertaut, E. F., Blum, P., Sagnières, A. (1959) Structure du ferrite bicalcique et de la brownmillerite. Acta Crystallographica, 12 (2) 149-159 doi:10.1107/s0365110x59000433
Smith, D. K. (1962) Crystallographic changes with the substitution of aluminum for iron in dicalcium ferrite. Acta Crystallographica, 15 (11) 1146-1152 doi:10.1107/s0365110x62003011
Berggren, Jan, Foss, Olav, Roti, Ingvald, Okinaka, Hideyuki, Kosuge, Koji, Kachi, Sukeji (1971) Refinement of the Crystal Structure of Dicalcium Ferrite, Ca2Fe2O5. Acta Chemica Scandinavica, 25. 3616-3624 doi:10.3891/acta.chem.scand.25-3616
Prasanna, T.R.S., Navrotsky, A. (1994) Energetics in the brownmillerite-perovskite pseudobinary Ca2Fe2O5-CaTiO3. Journal of Materials Research, 9 (12) 3121-3124 doi:10.1557/jmr.1994.3121
Redhammer, Günther J., Tippelt, Gerold, Roth, Georg, Amthauer, Georg (2004) Structural variations in the brownmillerite series Ca2(Fe2−xAlx)O5: Single-crystal X-ray diffraction at 25 °C and high-temperature X-ray powder diffraction (25 °C ≤T≤ 1000 °C). American Mineralogist, 89 (2-3). 405-420 doi:10.2138/am-2004-2-322
Locock, Andrew J., Piilonen, Paula C., Ercit, T. Scott, Rowe, Ralph (2006) New Mineral Names. American Mineralogist, 91 (1) 216-224 doi:10.2138/am.2006.454
Localities for Srebrodolskite
Showing 42 localities.
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.
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Kopeysk, Chelyabinsk Oblast, Russia