Seidozerite Mineral Data

[Newest Minerals] [Rare Minerals] [Cabinet Specimens] [About Us] [Gem and Mineral Shows]
Updated weekly, for the collector, educator, and researcher since 1996
Extensive Inventory of very Rare Minerals. Visa and Mastercard are Welcome

General Seidozerite Information

Chemical Formula:

(Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2

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

Empirical Formula:

Na_1.8Ca_0.2Zr_0.7Ti_0.6Mn²⁺_0.2Mg_0.2Fe³⁺_0.1Al_0.1(Si₂O₇)O_1.3F_0.7

Environment:

Thin veins in nepheline syenite pegmatites.

IMA Status:

Valid Species (Pre-IMA) 1958

Locality:

Lovozero massif, near the Muruai and Uel'kuai Rivers, Seidozero region, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named after the locality.

Name Pronunciation:

Seidozerite + Pronunciation

Synonym:

ICSD 22334

PDF 14-447

Seidozerite Image

Images:

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

Axial Ratios:

a:b:c =0.7788:1:2.5774

Cell Dimensions:

a = 5.53, b = 7.1, c = 18.3, Z = 4; beta = 102.7° V = 700.93 Den(Calc)= 3.49

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/c

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.97(1), 1.83(0.7), 2.87(0.7),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Christiansen C C , Johnsen O , Makovicky E , The Canadian Mineralogist , 41 (2003) p.1203-1224, Crystal chemistry of the rosenbuschite group, Sample: 1993.158

Physical Properties of Seidozerite

Cleavage:

{001} Perfect

Color:

Brownish red, Reddish yellow.

Density:

3.472

Diaphaneity:

Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

4-5 - Fluorite-Apatite

Luster:

Vitreous (Glassy)

Optical Properties of Seidozerite

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

Optical Data:

Biaxial (+), a=1.725, b=1.758, g=1.83, bire=0.1050, 2V(Calc)=72, 2V(Meas)=68.

Pleochroism (x):

dark red.

Pleochroism (y):

red.

Pleochroism (z):

light yellow.

Calculated Properties of Seidozerite

Electron Density:

Bulk Density (Electron Density)=3.34 gm/cc
note: Specific Gravity of Seidozerite =3.47 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Seidozerite= 26.83 barns/electron
U=PE_Seidozerite x rElectron Density= 89.52 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Seidozerite is Not Radioactive

Seidozerite Classification

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

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

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)

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
15 - WWW-MINCRYST

Search for Seidozerite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Seidozerite :

Dakota Matrix Minerals Google Search for Seidozerite
John Betts Fine Minerals Search for Seidozerite
McDougall Minerals Google Search for Seidozerite
Rock and Mineral Shows Google Search for Seidozerite
Weinrich Minerals, Inc. Google Search for Seidozerite

Ask about Seidozerite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Seidozerite Specimen Label here :

Seidozerite

(Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2
Dana No: 56.02.06a.01 Strunz No: 09.BE.25
Locality:

Notes: