Mineralogy Database

Srebrodolskite Mineral Data

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General Srebrodolskite Information

Help on Chemical  Formula: Chemical Formula: Ca2Fe+++2O5
Help on Composition: Composition: Molecular Weight = 271.85 gm
   Calcium  29.49 %  Ca   41.26 % CaO
   Iron     41.09 %  Fe   58.74 % Fe2O3
   Oxygen   29.43 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Fe3+2O5
Help on Environment: Environment: Calcined ankerite in petrified wood baked by burning coal heaps.
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Mines around Kopeysk, Chelyabinsk coal basin, Southern Ural Mountains, Russia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Boris Ivanovich Srebrodolskii (1927- ), Russian-Ukrainian mineralogist, Institute of Geology and Geochemistry, Lvov, Ukraine.
Help on Name Pronunciation: Name Pronunciation: Srebrodolskite + Pronunciation Say SREBRODOLSKITE
Help on Synonym: Synonym: ICSD 14296
  PDF 47-1744

Srebrodolskite Image

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  Srebrodolskite   Periclase

Comments: Black grains of srebrodolskite with white periclase.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

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  Kumtyubeite   Srebrodolskite   Wadalite   Rondorfite

Comments: BSE image of kumtyubeite (Kmt) associated with srebrodolskite (Srb), bultfonteinite (Blt), Ca- kydrosilicates, wadalite (Wad), rondorfite (Rndr), and ettringite (dark gray). (AmMin, v94:1361).
Location: Rock-forming mineral found in skarn carbonate-xenoliths in ignimbrites of the Upper Chegem volcanic structure, Kabardino-Balkaria, Northern Caucasus, Russia. Scale: See Image.
© American Mineralogist

Srebrodolskite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.3674:1:0.3792
Help on Cell Dimensions: Cell Dimensions: a = 5.42, b = 14.752, c = 5.594, Z = 4; V = 447.27 Den(Calc)= 4.04
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.676(1), 3.69(1), 7.381(1),

Physical Properties of Srebrodolskite

Help on Color: Color: Brown red, Black.
Help on Density: Density: 4.04
Help on Diaphaneity: Diaphaneity: Subtranslucent
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Adamantine - Metallic

Optical Properties of Srebrodolskite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.142 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.142 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3102,KPDmeas= 0.3102,KC= 0.2717
Ncalc = 2.1
Help on Optical Data: Optical Data: Biaxial (-), a=2.24, b=2.25, g=2.27, bire=0.0300

Calculated Properties of Srebrodolskite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.92 gm/cc
note: Specific Gravity of Srebrodolskite =4.04 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.009249769
Boson Index = 0.990750231
Help on Photoelectric: Photoelectric: PESrebrodolskite = 16.02 barns/electron
U=PESrebrodolskite x rElectron Density= 62.84 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Srebrodolskite is Not Radioactive

Srebrodolskite Classification

Help on  Dana Class: Dana Class: (07)Multiple Oxides
  (07.11)as titano-oxides with [4] and [6] substitutions
  (07.11.02)Dana Group Brownmillerite Ca2(Al,Fe)2O5 Ibmm 2/m 2/m 2/m Srebrodolskite Ca2Fe2O5 P nma 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.AC.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.A - Metal:Oxygen = 2.1 and 1:1
  04.AC -M:O = 1:1 (and up to 1:1.25); with large cations (� smaller ones)
04.AC.10 Brownmillerite Ca2(Al,Fe)2O5 Ibmm 2/m 2/m 2/m
04.AC.10 Srebrodolskite Ca2Fe2O5 P nma 2/m 2/m 2/m

Other Srebrodolskite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Srebrodolskite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 04.AC.10





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