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Seidozerite Mineral Data

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General Seidozerite Information

Help on Chemical  Formula: Chemical Formula: (Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2
Help on Composition: Composition: Molecular Weight = 368.38 gm
   Sodium     11.23 %  Na   15.14 % Na2O
   Calcium     2.18 %  Ca    3.04 % CaO
   Magnesium   1.32 %  Mg    2.19 % MgO
   Zirconium  17.33 %  Zr   23.42 % ZrO2
   Titanium    7.80 %  Ti   13.01 % TiO2
   Manganese   2.98 %  Mn    3.85 % MnO
   Aluminum    0.73 %  Al    1.38 % Al2O3
   Iron        1.52 %  Fe    2.17 % Fe2O3
   Silicon    15.25 %  Si   32.62 % SiO2
   Oxygen     36.05 %  O
   Fluorine    3.61 %  F     3.61 % F
                -   %   F    -1.52 % -O=F2    
             ______        ______ 
             100.00 %       98.91 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na1.8Ca0.2Zr0.7Ti0.6Mn2+0.2Mg0.2Fe3+0.1Al0.1(Si2O7)O1.3F0.7
Help on Environment: Environment: Thin veins in nepheline syenite pegmatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1958
Help on Locality: Locality: Lovozero massif, near the Muruai and Uel'kuai Rivers, Seidozero region, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality.
Help on Name Pronunciation: Name Pronunciation: Seidozerite + Pronunciation Say SEIDOZERITE
Help on Synonym: Synonym: ICSD 22334
  PDF 14-447

Seidozerite Image

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  Seidozerite   Arfvedsonite

Comments: Dark red translucent seidozerite with vitreous, black arfvedsonite.
Location: Seidozero Lake, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Seidozerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7788:1:2.5774
Help on Cell Dimensions: Cell Dimensions: a = 5.53, b = 7.1, c = 18.3, Z = 4; beta = 102.7° V = 700.93 Den(Calc)= 3.49
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.97(1), 1.83(0.7), 2.87(0.7),

Physical Properties of Seidozerite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Brownish red, Reddish yellow.
Help on Density: Density: 3.472
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Vitreous (Glassy)

Optical Properties of Seidozerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.026 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2209,KPDmeas= 0.2221,KC= 0.2269
Ncalc = 1.79
Help on Optical Data: Optical Data: Biaxial (+), a=1.725, b=1.758, g=1.83, bire=0.1050, 2V(Calc)=72, 2V(Meas)=68.
Help on Pleochroism (x): Pleochroism (x): dark red.
Help on Pleochroism (y): Pleochroism (y): red.
Help on Pleochroism (z): Pleochroism (z): light yellow.

Calculated Properties of Seidozerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.34 gm/cc
note: Specific Gravity of Seidozerite =3.47 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PESeidozerite = 26.83 barns/electron
U=PESeidozerite x rElectron Density= 89.52 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Seidozerite is Not Radioactive

Seidozerite Classification

Help on  Dana Class: Dana Class: 56.02.06a.01 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O
  (56.02)with cations in [4] and/or >[4] coordination
  (56.02.06a)Seidozerite - Lamprophyllite group
56.02.06a.01 Seidozerite (Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2 P 2/c 2/m
56.02.06a.02 Normandite! NaCa(Mn,Fe)(Ti,Nb,Zr)Si2O7(O,F)2 P 21/a 2/m
56.02.06a.03 Grenmarite! (Zr,Mn)2(Zr,Ti)(Mn,Na)(Na,Ca)4(Si2O7)2(O,F)4 P 2/c 2/m
Help on  Strunz Class: Strunz Class: 09.BE.25 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BE -Si2O7 groups with additional anions;
09.BE.25 Barytolamprophyllite Ba2Na3(Fe,Ti)3(Si2O7)2(O,OH,F)4 C 2/m 2/m
09.BE.25 Ericssonite BaMn2FeO[Si2O7](OH) C 2/m 2/m
09.BE.25 Lamprophyllite Na2(Sr,Ba)2Ti3(SiO4)4(OH,F)2 C 2/m 2/m
09.BE.25 Orthoericssonite BaMn2(FeO)Si2O7(OH) Pmmn 2/m 2/m 2/m
09.BE.25 Seidozerite (Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2 P 2/c 2/m
09.BE.25 Nabalamprophyllite! Ba(Na,Ba){Na3Ti[Ti2O2Si4O14](OH,F)2} P 2/m 2/m
09.BE.25 Grenmarite! (Zr,Mn)2(Zr,Ti)(Mn,Na)(Na,Ca)4(Si2O7)2(O,F)4 P 2/c 2/m

Other Seidozerite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Seidozerite :
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: 56.02.06a.01 Strunz No: 09.BE.25





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