Mineralogy Database

Zektzerite Mineral Data

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General Zektzerite Information

Help on Chemical  Formula: Chemical Formula: NaLiZrSi6O15
Help on Composition: Composition: Molecular Weight = 529.66 gm
   Sodium      4.34 %  Na    5.85 % Na2O
   Lithium     1.31 %  Li    2.82 % Li2O
   Zirconium  17.22 %  Zr   23.26 % ZrO2
   Silicon    31.82 %  Si   68.06 % SiO2
   Oxygen     45.31 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaLiZrSi6O15
Help on Environment: Environment: In miarolitic cavities and isolated grains in alkaline syenite of the Golden Horn batholith.
Help on IMA Status: IMA Status: Approved IMA 1977
Help on Locality: Locality: Washington Pass, Okanogan County, Washington, USA Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Jack Zektzer (1936-), mathematician and geologist of Seattle, Washington, USA.
Help on Name Pronunciation: Name Pronunciation: Zektzerite + Pronunciation Say ZEKTZERITE
Help on Synonym: Synonym: ICSD 100631
  PDF 29-835

Zektzerite Image

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Comments: Pale peach-colored crystal of zektzerite on white feldspar.
Location: Golden Horn batholith, Okanogan County, Oregon, USA. Scale: Crystal size 1 cm.
© Dave Barthelmy

Zektzerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8257:1:0.5856
Help on Cell Dimensions: Cell Dimensions: a = 14.33, b = 17.354, c = 10.164, Z = 8; V = 2,527.61 Den(Calc)= 2.78
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C mca
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.85(1), 3.145(0.85), 7.19(0.78),

Physical Properties of Zektzerite

Help on Cleavage: Cleavage: {100} Perfect, {010} Perfect
Help on Color: Color: Colorless, Pink.
Help on Density: Density: 2.79
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luminescence: Luminescence: Fluorescent, Short UV=light yellow.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white

Optical Properties of Zektzerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.003 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2098,KPDmeas= 0.2091,KC= 0.2104
Ncalc = 1.59
Help on Optical Data: Optical Data: Biaxial (-), a=1.582, b=1.584, g=1.584, bire=0.0020, 2V(Calc)=0, 2V(Meas)=0. Dispersion r > v weak.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.

Calculated Properties of Zektzerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.71 gm/cc
note: Specific Gravity of Zektzerite =2.78 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEZektzerite = 24.04 barns/electron
U=PEZektzerite x rElectron Density= 65.12 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zektzerite is Not Radioactive

Zektzerite Classification

Help on  Dana Class: Dana Class: (66)Inosilicate Double-Width Unbranched Chains, W=2
  (66.03)with chains P>2
  (66.03.04)P=6 (Tahualite group) Tuhualite [](Na,K)FeFe[Si6O15] C mca 2/m 2/m 2/m Zektzerite NaLiZrSi6O15 C mca 2/m 2/m 2/m Emeleusite Na4Li2Fe2Si12O30 Pnna 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.DN.05 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DN -Inosilicates with 6-periodic double chains
09.DN.05 Emeleusite Na4Li2Fe2Si12O30 Pnna 2/m 2/m 2/m
09.DN.05 Tuhualite [](Na,K)FeFe[Si6O15] C mca 2/m 2/m 2/m
09.DN.05 Zektzerite NaLiZrSi6O15 C mca 2/m 2/m 2/m

Other Zektzerite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Zektzerite :
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: 09.DN.05





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