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Srebrodolskite

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Big Photo

Ronneburg U deposit, Gera, Thuringia, Germany
© Thomas Witzke

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Formula:
Ca
 
2
Fe
3+
2
O
 
5
System:OrthorhombicColour:Black
Hardness:5½
Name:Named after Boris Ivanovich Srebrodolsky (b. 1927), mineralogist, Institute of Geology and Geochemistry, Lvov (Ukraine).


Brownmillerite-Srebrodolskite Series.

Classification of Srebrodolskite

IMA status:Approved 1984
Strunz 8th edition ID:4/A.07-20
Nickel-Strunz 10th (pending) edition ID: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)
Hey's CIM Ref.:7.20.13

7 : Oxides and Hydroxides
20 : Oxides of Fe
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Type Occurrence of Srebrodolskite

Type Locality:Kopeisk, Chelyabinsk coal basin, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
Year of Discovery:1984

Physical Properties of Srebrodolskite

Lustre:Adamantine
Colour:Black
Streak:Grayish brown
Hardness (Mohs):5½

Crystallography of Srebrodolskite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pnma {P21/n 21/m 21/a}
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 Volume:V 447.27 ų (Calculated from Unit Cell)
Z:4

Optical Data of Srebrodolskite

Type:Biaxial (-)
RI values: nα = 2.240 nβ = 2.250 nγ = 2.270
Maximum Birefringence:δ = 0.030

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:relatively strong

Chemical Properties of Srebrodolskite

Formula:
Ca
 
2
Fe
3+
2
O
 
5
Essential elements:Ca, Fe, O
All elements listed in formula:Ca, Fe, O

Relationship of Srebrodolskite to other Species

Series:Forms a series with Brownmillerite (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
4.AC.05Swedenborgite
NaBe
 
4
Sb
5+
 
O
 
7
4.AC.10Brownmillerite
Ca
 
2
(Al,Fe
3+
 
)
 
2
O
 
5
4.AC.15Montroydite
HgO
4.AC.20Litharge
PbO
4.AC.20Romarchite
SnO
4.AC.25Massicot
PbO
Related Minerals - Hey's Index Grouping:

- +
7.20.1Wüstite
FeO
7.20.2Magnetite
Fe
2+
 
Fe
3+
2
O
 
4
7.20.3Maghemite
Fe
3+
2
O
 
3
7.20.4Hematite
Fe
 
2
O
 
3
7.20.5Goethite
α-Fe
3+
 
O(OH)
7.20.6Akaganeite
β-Fe
3+
 
O(OH,Cl)
7.20.7Feroxyhyte
Fe
3+
 
O(OH)
7.20.8Lepidocrocite
γ-Fe
3+
 
O(OH)
7.20.9Ferrihydrite
Fe
3+
5
O
 
3
(OH)
 
9
7.20.10Amakinite
(Fe
2+
 
,Mg)(OH)
 
2
7.20.11Magnesioferrite
MgFe
3+
2
O
 
4
7.20.12Muskoxite
Mg
 
7
Fe
 
4
O
 
13
 · 10H
 
2
O
7.20.14Hercynite
Fe
2+
 
Al
 
2
O
 
4
7.20.15Brownmillerite
Ca
 
2
(Al,Fe
3+
 
)
 
2
O
 
5

Other Names for Srebrodolskite

Synonyms:
IMA1984-050
Other Languages:
German:Srebrodolskit
Russian:Сребродольскит
Spanish:Srebrodolskita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Srebrodolskite

Reference List:

- +
Smith, D.K. (1962): Crystallographic changes with the substitution of aluminum for iron in dicalcium ferrite. Acta Crystallographica, 15, 1146–1152.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1985): 114(2): 195-199.

American Mineralogist (1986): 71: 1279-1280.

Acta Chemica Scandinavica: 25: 3616-3624.

Internet Links for Srebrodolskite

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  • Raman and XRD data at RRUFF project
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    • Localities for Srebrodolskite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Austria
     
    • Styria
      • Bad Radkersburg
        • Klöch
    		Heritsch, H. (1990): Eine Kontaktbildung aus dem Nephelinbasanitsteinbruch von Klöch (Südoststeiermark) mit seltenen Mineralien; natürliches Vorkommen der Verbindung 4CaO.3Al2O3.SO3. – Mitt. Abt. Mineralogie, Landesmuseum Joanneum 58, 15-35. ["brownmillerite" = in fact srebrodolskite]; Kolitsch, U. & Brandstätter, F. (2011): 1709) Srebrodolskit und die Phase Ca3Ti(Fe,Al)2O8 in einem Ca-reichen Xenolith aus dem Basaltbruch Klöch, Bad Radkersburg, Steiermark. Pp. 174-175 in Niedermayr, G. et al. (2011): Neue Mineralfunde aus Österreich LX. Carinthia II, 201./121., 135-186.
    Canada
     
    • Québec
      • Nord-du-Québec
        • Kativik
    		Daniel F. Rosa and Robert F. Martin (2010) A spurrite-, merwinite- and srebrodolskite-bearing skarn assemblage, West Clearwater Lake impact crater, northern Quebec. The Canadian Mineralogist (December 2010), 48(6):1519-1532
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Ústí Region
        • Duchcov (Dux)
    		Žáček V., Skála R., Chlupáčová M., Dvořák Z. 2005: Ca-Fe3+-rich, Si-undersaturated buchite from Želénky, North-Bohemian Brown Coal Basin, Czech Republic. Eur. J. Mineral., 17, 623-633
    Germany
     
    • Rhineland-Palatinate
      • Eifel
        • Mayen
          • Ettringen
            • Bellerberg volcano
    		Lapis, 15 (5), 9-36.
              • Southern lava flow
                • Mayener Feld
    		Rüdinger, B.; Tillmanns, E. Hentschel, G. (1993): Bellbergite – a New Mineral with the Zeolite Structure Type EAB, Mineralogy and Petrology 48, 147-152
    • Thuringia
      • Gera
        • Ronneburg U deposit
    		XRD and SEM-EDX analysis (T. Witzke)
    Israel
     
    • Negev
    		Sharygin, V.V., Sokol, E.V. & Vapnik, Ye. (2008): Minerals of the pseudobinary perovskite-brownmillerite series from combustion metamorphic larnite rocks of the Hatrurim Formation (Israel). Russian Geology and Geophysics 49, 709-726. [as Fe-rich "brownmillerite"]]
    Palestine
     
    • West Bank
      • Hatrurim formation
    		Mikhail N. Murashko analytical data
    Poland
     
    • Małopolskie
      • Olkusz District
        • Olkusz
    		J. Cabala, B. Zogala, R. Dubiel (2008) Geochemical and Geophysical Study of Historical Zn-Pb Ore Processing Waste Dump Areas (Southern Poland). Polish J. of Environ. Stud. Vol. 17, No. 5, 693-700
    Romania
     
    • Covasna Co.
    		Szakáll, S. & Kristály, F., Eds. (2010): Mineralogy of Székelyland, Eastern Transylvania, Romania. Csík County Nature and Conservation Society, Miercurea-Ciuc, Romania, 321 pp.
    Russia
     
    • Northern Caucasus Region
      • Kabardino-Balkarian Republic
        • Verkhnechegemskaya caldera (Verkhni Chegem caldera; Upper Chegem caldera)
    		American Mineralogist, Volume 94, pages 1361–1370, 2009; Galuskin, et al., EJM fast-track (2009)
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
    		Cesnokov, B., M. Kotrly, and T. Nisanbajev (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
    Cesnokov, B., M. Kotrly, and T. Nisanbajev (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German); Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Cesnokov, B., M. Kotrly, and T. Nisanbajev (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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