Zeravshanite Mineral Data (original) (raw)

General Zeravshanite Information

Help on Chemical Formula: Chemical Formula:

Cs4Na2Zr3(Si18O45)(H2O)2

Help on Composition: Composition:

Molecular Weight = 2,118.63 gm

Cesium 23.84 % Cs 25.27 % Cs2O

Potassium 0.04 % K 0.04 % K2O

Sodium 2.37 % Na 3.19 % Na2O

Zirconium 11.75 % Zr 15.88 % ZrO2

Titanium 0.43 % Ti 0.72 % TiO2

Iron 0.11 % Fe 0.15 % Fe2O3

Silicon 23.86 % Si 51.05 % SiO2

Tin 0.22 % Sn 0.28 % SnO2

Hydrogen 0.38 % H 3.40 % H2O

Oxygen 37.00 % O

______ ______

100.00 % 99.98 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Cs3.8Na0.18K0.02Na2Zr2.73Ti0.19Sn0.04Fe3+0.04Si18O452(H2O)2

Help on Environment: Environment:

Found in a pegmatite boulder. New structure type [Si18O45]18-, 5 and 8-member silicate rings in sheet structure.

Help on IMA Status: IMA Status:

Approved IMA 2004 (Dana # Added)

Help on Locality: Locality:

Glacial moraine of the Dara-i-Pioz clacier, Alai mountain range, Tien-Shan Mountains, Tajikistan. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named after the type locality (Zeravshan Range).

Help on Synonym: Synonym:

IMA2003-034

Zeravshanite Image

Click Here for Larger Zeravshanite Image in a New Browser Window Images:

Click Here for Larger Zeravshanite Image Zeravshanite Comments: BSE image of irregular grains of zeravshanite (zerav), sogdianite (sog) and aegirite (aegi). Location: Dara-i-Pioz, Tadjikistan.Scale: See Image. © Diederik Visser

Zeravshanite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =3.4918:1:3.0447

Help on Cell Dimensions: Cell Dimensions:

a = 26.3511, b = 7.5464, c = 22.9769, Z = 4; beta = 107.237° V = 4,363.88 Den(Calc)= 3.22

Help on Crystal System: Crystal System:

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

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.35(1)(712 ), 3.14(0.9)(224 ), 2.62(0.7)(026 ),2.82(0.5)(716 ), 3.65(0.5)(006 ), 6.32(0.5)(402 ), 1.865(0.4)(538 ), 1.891(0.

Click Here for Large Zeravshanite Structure Window Crystal Structure:

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Help on Above

| | Uvarova Y A , Sokolova E V , Hawthorne F C , Pautov L A , Agakhanov A A , The Canadian Mineralogist , 42 (2004) p.125-134, A novel (Si18O45)18- sheet in the crystal structure of zeravshanite,, Cs4Na2Zr3(Si18O45)(H2O)2 | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Zeravshanite

Help on Cleavage: Cleavage:

{???} Distinct

Help on Color: Color:

Colorless.

Help on Density: Density:

3.09

Help on Diaphaneity: Diaphaneity:

Transparent

Help on Habit: Habit:

Aggregates - Made of numerous individual crystals or clusters.

Help on Habit: Habit:

Tabular - Form dimensions are thin in one direction.

Help on Hardness: Hardness:

6 - Orthoclase

Help on Luster: Luster:

Vitreous (Glassy)

Help on Streak: Streak:

white

Optical Properties of Zeravshanite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.033 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1849,KPDmeas= 0.1927,KC= 0.1912
Ncalc = 1.59 - 1.62

Help on Optical Data: Optical Data:

Biaxial (-), a=1.585, b=1.598, g=1.603, bire=0.0180, 2V(Calc)=62, 2V(Meas)=-63. Dispersion medium, r < v.

Calculated Properties of Zeravshanite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.92 gm/cc
note: Specific Gravity of Zeravshanite =3.09 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PEZeravshanite = 113.84 barns/electron
U=PEZeravshanite x relectron= 332.65 barns/cc.

Help on Radioactivity: Radioactivity:

Zeravshanite Classification

Help on Dana Class: Dana Class:

72.03.03.01 (72)Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings

(72.03)with 3-, 4-, or 5-membered rings and 8-membered rings

(72.03.03)Dana Group

72.03.03.01 Zeravshanite! Cs4Na2Zr3(Si18O45)(H2O)2 C 2/c 2/m

Help on Strunz Class: Strunz Class:

09.EA.75 09 - SILICATES (Germanates)

09.E - Phyllosilicates

09.EA -Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings

09.EA.75 Zeravshanite! Cs4Na2Zr3(Si18O45)(H2O)2 C 2/c 2/m

Other Zeravshanite Information

Help on References: References:

NAME( CanMin, v 42, p 125) PHYS. PROP.(AmMin, v91, p220) OPTIC PROP.(AmMin, v91, p220)

Help on See Also: See Also:

Links to other databases for Zeravshanite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Ask about Zeravshanite here :
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Print or Cut-and-Paste your Zeravshanite Specimen Label here :

Zeravshanite

Cs4Na2Zr3(Si18O45)(H2O)2
Dana No: 72.03.03.01 Strunz No: 09.EA.75
Locality:

Notes: