Vishnevite Mineral Data

General Vishnevite Information

Chemical Formula: (Na,Ca,K)6(Si,Al)12O24[(SO4),(CO3),Cl2]2-4•n(H2O) Composition: Molecular Weight = 1,041.34 gm    Potassium   3.75 %  K     4.52 % K₂O    Sodium     14.35 %  Na   19.34 % Na₂O    Calcium     0.38 %  Ca    0.54 % CaO    Aluminum   15.03 %  Al   28.39 % Al₂O₃    Silicon    16.72 %  Si   35.77 % SiO₂    Hydrogen    0.27 %  H     2.42 % H₂O    Carbon      0.46 %  C     1.69 % CO₂    Sulfur      2.16 %  S     5.38 % SO₃    Chlorine    1.70 %  Cl    1.70 % Cl                 -   %   Cl   -0.38 % -O=Cl₂       Oxygen     45.17 %  O              ______        ______               100.00 %       99.39 % = TOTAL OXIDE Empirical Formula: Na_6.5KCa_0.1Si_6.2Al_5.8O₂₄(SO₄)_0.7(CO₃)_0.4Cl_0.5·1.4(H₂O) Environment: In poikilitic aegirine-nepheline-sodalite syenites and associated pegmatites. IMA Status: Valid Species (Pre-IMA) 1931 Locality: From the Kurochkin Vally, Vishnevy-Ilmen Mountains, Soputhern Urals, Russia. Link to MinDat.org Location Data. Name Origin: Named for the locality. Name Pronunciation: Vishnevite + Pronunciation Synonym: ICSD 201804   PDF 46-1333   Sulfatic cancrinite  

Vishnevite Image

Images:

Vishnevite Crystallography

Axial Ratios: a:c = 1:0.40647 Cell Dimensions: a = 12.67, c = 5.15, Z = 1; V = 715.96 Den(Calc)= 2.42 Crystal System: Hexagonal - TrapezohedralH-M Symbol (6 2 2) Space Group: P 6₃22 X Ray Diffraction: By Intensity(I/I_o): 3.273(1), 3.695(0.88), 2.769(0.65),4.742(0.5), 2.649(0.28), 2.101(0.27), 6.4(0.25), 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

Hassan I , Grundy H D , The Canadian Mineralogist , 22 (1984) p.333-349, The character of the cancrinite-vishnevite solid-solution series

 

Physical Properties of Vishnevite

Cleavage: {1010} Perfect, {0001} Indistinct Color: Colorless, Yellow, White, Light blue, Light gray. Density: 2.32 - 2.42, Average = 2.37 Diaphaneity: Transparent to Translucent Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments. Habit: Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks. Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). Hardness: 5-6 - Between Apatite and Orthoclase Luster: Vitreous - Pearly Streak: white  

Optical Properties of Vishnevite

Gladstone-Dale: CI meas= -0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2045,KPDmeas= 0.2089,KC= 0.2066
Ncalc = 1.48 - 1.5 Optical Data: Uniaxial (-), e=1.488-1.495, w=1.49-1.507, bire=0.0020-0.0120.  

Calculated Properties of Vishnevite

Electron Density: Bulk Density (Electron Density)=2.39 gm/cc
note: Specific Gravity of Vishnevite =2.42 gm/cc.
Fermion Index: Fermion Index = 0.0082483583
Boson Index = 0.9917516417 Photoelectric: PE_Vishnevite = 1.98 barns/electron
U=PE_Vishnevite x r_electron= 4.75 barns/cc.
Radioactivity:

GRapi = 53.58 (Gamma Ray American Petroleum Institute Units)
Concentration of Vishnevite per GRapi unit = 1.87 (%)

Estimated Radioactivity from Vishnevite - barely detectable

 

Vishnevite Classification

Dana Class: 76.02.05.15 (76)Tectosilicate Al-Si Framework   (76.02)Feldspathoids and related species   (76.02.05)Cancrinite group  

76.02.05.01 Afghanite (Na,Ca,K)8(Si,Al)12O24(SO4,Cl,CO3)3•(H2O) P 6₃/mmc, P 6₃mc, or P 62c Hex

 

76.02.05.02 Bystrite (Na,K)7Ca(Si6Al6)O24S4.5•(H2O) P 3₁c 3m

 

76.02.05.03 Cancrinite Na6Ca2Al6Si6O24(CO3)2 P 6₃ 6

 

76.02.05.04 Cancrisilite Na7Al5Si7O24(C03)•3(H2O) P 6₃ 6

 

76.02.05.05 Davyne Na4K2Ca2Si6Al6O24(SO4)Cl2 P 6₃/m 6/m

 

76.02.05.06 Franzinite [(Na,K)30Ca10][Si30Al30O120](SO4)10•2(H2O) P 3₂1 3 2

 

76.02.05.07 Giuseppettite [Na42K16Ca6]S64Si48Al48O192(SO4)10Cl2•5H2O P 3₁c 3m

 

76.02.05.08 Hydroxycancrinite Na4(AlSiO4)3(OH)•(H2O) P 6₃ 6

 

76.02.05.09 Liottite (Ca,Na,K)8(Si,Al)12O24[(SO4),(CO3),Cl,OH]4•(H2O) P 6m2 6 m2

 

76.02.05.10 Microsommite (Na,Ca,K)7-8(Si,Al)12O24(Cl,SO4)2-3 P 6₃22 6 2 2

 

76.02.05.11 Pitiglianoite Na6K2Si6Al6O24(SO4)•2(H2O) P 6₃ 6

 

76.02.05.12 Quadridavyne (Na,K)6Ca2Al6Si6O24Cl4 P 6₃/m 6/m

 

76.02.05.13 Sacrofanite (Na,Ca,K)9Si6Al6O24[(OH),(SO4),(CO3),Cl)]4•n(H2O) P 6₃/mmc ? 6/m 2/m 2/m

 

76.02.05.14 Tounkite (Na,Ca,K)8Al6Si6O24(SO4)2Cl•(H2O) P 6₂22 6 2 2

 

76.02.05.15 Vishnevite (Na,Ca,K)6(Si,Al)12O24[(SO4),(CO3),Cl2]2-4•n(H2O) P 6₃22 6 2 2

 

76.02.05.16 Wenkite Ba4Ca6(Si,Al)20O39(OH)2(SO4)3•n(H2O)(?) P 62m 6 m2

 

76.02.05.17 Marinellite! [(Na,K)42Ca6](Si36Al36O144)(SO4)8Cl2•6(H2O) P 3₁c or P 2c Trig

 

76.02.05.18 Farneseite! (Na37K9Ca10)S56(Si42Al42)S84O168(SO4)12•6(H2O) P 6₃/m 6/m 2/m 2/m

 

76.02.05.19 Alloriite! Na5K1.5Ca(Si6Al6O24)(SO4)(OH)0.5•H2O P 3₁c 3m

 

76.02.05.20 Biachellaite (Na,Ca,K)8(Si6Al6O24)(SO4)2(OH)0.5•H2O P 3 3

 

76.02.05.21 IMA2008-006! [Na82.5Ca33K16.5](Si99Al99O396)(SO4)33•4H2O P 3 3

 

76.02.05.22 Kyanoxalite! Na7(Al5-6Si6-7O24)(C2O4)0.5-1.0•5H2O P 6₃ 6

 

76.02.05.23 IMA2008-065! (Na,K)6Ca2(Si6Al6O24)Cl2(CO3) P 6₃ 6

Strunz Class: 09.FB.05 09 - SILICATES (Germanates)   09.F - Tektosilicates without Zeolitic H2O   09.FB -Tektosilicates with additional anions  

09.FB.05 Bystrite (Na,K)7Ca(Si6Al6)O24S4.5•(H2O) P 3₁c 3m

 

09.FB.05 Afghanite (Na,Ca,K)8(Si,Al)12O24(SO4,Cl,CO3)3•(H2O) P 6₃/mmc, P 6₃mc, or P 62c Hex

 

09.FB.05 Cancrisilite Na7Al5Si7O24(C03)•3(H2O) P 6₃ 6

 

09.FB.05 Cancrinite Na6Ca2Al6Si6O24(CO3)2 P 6₃ 6

 

09.FB.05 Hydroxycancrinite Na4(AlSiO4)3(OH)•(H2O) P 6₃ 6

 

09.FB.05 Franzinite [(Na,K)30Ca10][Si30Al30O120](SO4)10•2(H2O) P 3₂1 3 2

 

09.FB.05 Liottite (Ca,Na,K)8(Si,Al)12O24[(SO4),(CO3),Cl,OH]4•(H2O) P 6m2 6 m2

 

09.FB.05 Davyne Na4K2Ca2Si6Al6O24(SO4)Cl2 P 6₃/m 6/m

 

09.FB.05 Giuseppettite [Na42K16Ca6]S64Si48Al48O192(SO4)10Cl2•5H2O P 3₁c 3m

 

09.FB.05 Quadridavyne (Na,K)6Ca2Al6Si6O24Cl4 P 6₃/m 6/m

 

09.FB.05 Pitiglianoite Na6K2Si6Al6O24(SO4)•2(H2O) P 6₃ 6

 

09.FB.05 Microsommite (Na,Ca,K)7-8(Si,Al)12O24(Cl,SO4)2-3 P 6₃22 6 2 2

 

09.FB.05 Vishnevite (Na,Ca,K)6(Si,Al)12O24[(SO4),(CO3),Cl2]2-4•n(H2O) P 6₃22 6 2 2

 

09.FB.05 Sacrofanite (Na,Ca,K)9Si6Al6O24[(OH),(SO4),(CO3),Cl)]4•n(H2O) P 6₃/mmc ? 6/m 2/m 2/m

 

09.FB.05 Marinellite! [(Na,K)42Ca6](Si36Al36O144)(SO4)8Cl2•6(H2O) P 3₁c or P 2c Trig

 

09.FB.05 Tounkite (Na,Ca,K)8Al6Si6O24(SO4)2Cl•(H2O) P 6₂22 6 2 2

 

09.FB.05 IMA2008-065! (Na,K)6Ca2(Si6Al6O24)Cl2(CO3) P 6₃ 6

 

09.FB.05 Farneseite! (Na37K9Ca10)S56(Si42Al42)S84O168(SO4)12•6(H2O) P 6₃/m 6/m 2/m 2/m

 

09.FB.05 Biachellaite (Na,Ca,K)8(Si6Al6O24)(SO4)2(OH)0.5•H2O P 3 3

 

09.FB.05 IMA2008-006! [Na82.5Ca33K16.5](Si99Al99O396)(SO4)33•4H2O P 3 3

 

09.FB.05 Alloriite! Na5K1.5Ca(Si6Al6O24)(SO4)(OH)0.5•H2O P 3₁c 3m

 

Other Vishnevite Information

References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2) See Also: Links to other databases for Vishnevite :
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
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Vishnevite :

A Bijoux Google Search for Vishnevite
Adam's Minerals Google Search for Vishnevite
Cape Minerals Google Search for Vishnevite
Dakota Matrix Minerals Google Search for Vishnevite
Excalibur Mineral Corp. Google Search for Vishnevite
Exceptional Minerals Google Search for Vishnevite
John Betts Fine Minerals Search for Vishnevite
McDougall Minerals Google Search for Vishnevite
Mineral News Website Link
Rock and Mineral Shows Google Search for Vishnevite
Weinrich Minerals, Inc. Google Search for Vishnevite

Ask about Vishnevite 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 Vishnevite Specimen Label here :