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Svyazhinite Mineral Data

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General Svyazhinite Information

Help on Chemical  Formula: Chemical Formula: MgAl(SO4)2F•14(H2O)
Help on Composition: Composition: Molecular Weight = 514.63 gm
   Magnesium   4.72 %  Mg    7.83 % MgO
   Aluminum    5.24 %  Al    9.91 % Al2O3
   Hydrogen    5.48 %  H    49.01 % H2O
   Sulfur     12.46 %  S    31.12 % SO3
   Oxygen     68.40 %  O
   Fluorine    3.69 %  F     3.69 % F
                -   %   F    -1.55 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: MgAl(SO4)2F•14(H2O)
Help on Environment: Environment: Associated with pyrite and fluorite and in fractures cutting pyroxene-amphibole fenites.
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Ilmeniskie Mountains, Ural Mountains, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Nikolai Vasilevich Svyazhin (1927-1967), Russian mineralogist.
Help on Name Pronunciation: Name Pronunciation: Svyazhinite + Pronunciation Say SVYAZHINITE

Svyazhinite Image

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Comments: Granular svyazhinite aggregate.
Location: Chelyabinsk Coal Basin, Kopeisk, Chelyabinsk District, Southern Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Svyazhinite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4672:1:0.47
Help on Cell Dimensions: Cell Dimensions: a = 6.217, b = 13.306, c = 6.255, Z = 1; alpha = 90.09°, beta = 93.5°, gamma = 82.05° V = 511.51 Den(Calc)= 1.67
Help on Crystal System: Crystal System: Triclinic Space Group: P1,P 1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.91(1), 5.68(0.7), 4.4(0.5),

Physical Properties of Svyazhinite

Help on Color: Color: Colorless, Gray white, Yellow.
Help on Density: Density: 1.69
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Nodular - Tuberose forms having irregular protuberances over the surface.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Svyazhinite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2607,KPDmeas= 0.2576,KC= 0.2596
Ncalc = 1.43 - 1.44
Help on Optical Data: Optical Data: Biaxial (-), a=1.423, b=1.439, g=1.444, bire=0.0210, 2V(Calc)=56, 2V(Meas)=small.

Calculated Properties of Svyazhinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.75 gm/cc
note: Specific Gravity of Svyazhinite =1.67 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0059940163
Boson Index = 0.9940059837
Help on Photoelectric: Photoelectric: PESvyazhinite = 1.16 barns/electron
U=PESvyazhinite x rElectron Density= 2.04 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Svyazhinite is Not Radioactive

Svyazhinite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.09)where (A+ B++) (XO4) Zq�x(H2O)
  (31.09.08)Aubertite Group Aubertite CuAl(SO4)2Cl•14(H2O) P1 1 Svyazhinite MgAl(SO4)2F•14(H2O) P1,P 1 Tri Magnesioaubertite (Mg,Cu)Al(SO4)2Cl•14(H2O) P1 1
Help on  Strunz Class: Strunz Class: 07.DB.05 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DB -With only medium-sized cations; insular octahedra and finite groups
07.DB.05 Aubertite CuAl(SO4)2Cl•14(H2O) P1 1
07.DB.05 Magnesioaubertite (Mg,Cu)Al(SO4)2Cl•14(H2O) P1 1
07.DB.05 Svyazhinite MgAl(SO4)2F•14(H2O) P1,P 1 Tri

Other Svyazhinite Information

Help on References: References: NAME( Dana8) 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 Svyazhinite :
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: 07.DB.05





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