Svyazhinite Mineral Data (original) (raw)
General Svyazhinite Information
MgAl(SO4)2F•14(H2O)
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
______ ______
100.00 % 100.00 % = TOTAL OXIDE
MgAl(SO4)2F•14(H2O)
Associated with pyrite and fluorite and in fractures cutting pyroxene-amphibole fenites.
Approved IMA 1984
Ilmeniskie Mountains, Ural Mountains, Russia. Link to MinDat.org Location Data.
Named for Nikolai Vasilevich Svyazhin (1927-1967), Russian mineralogist.
Svyazhinite Image
Svyazhinite Crystallography
a:b:c =0.4672:1:0.47
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
TriclinicSpace Group: P1,P 1
By Intensity(I/Io): 4.91(1), 5.68(0.7), 4.4(0.5),
Physical Properties of Svyazhinite
Colorless, Gray white, Yellow.
1.69
Transparent
Nodular - Tuberose forms having irregular protuberances over the surface.
Tabular - Form dimensions are thin in one direction.
2-3 - Gypsum-Calcite
Vitreous (Glassy)
white
Optical Properties of Svyazhinite
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
Biaxial (-), a=1.423, b=1.439, g=1.444, bire=0.0210, 2V(Calc)=56, 2V(Meas)=small.
Calculated Properties of Svyazhinite
Bulk Density (Electron Density)=1.75 gm/cc
note: Specific Gravity of Svyazhinite =1.67 gm/cc.
Fermion Index = 0.0059940163
Boson Index = 0.9940059837
PESvyazhinite = 1.16 barns/electron
U=PESvyazhinite x rElectron Density= 2.04 barns/cc.
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Svyazhinite is Not Radioactive
Svyazhinite Classification
31.09.08.02 (31)Hydrated Sulfates Containing Hydroxyl or Halogen
(31.09)where (A+ B++) (XO4) Zq�x(H2O)
(31.09.08)Aubertite Group
31.09.08.01 Aubertite CuAl(SO4)2Cl•14(H2O) P1 1
31.09.08.02 Svyazhinite MgAl(SO4)2F•14(H2O) P1,P 1 Tri
31.09.08.03 Magnesioaubertite (Mg,Cu)Al(SO4)2Cl•14(H2O) P1 1
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
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
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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Svyazhinite
MgAl(SO4)2F•14(H2O)
Dana No: 31.09.08.02 Strunz No: 07.DB.05
Locality:
Notes: