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Farneseite Mineral Data

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General Farneseite Information

Help on Chemical  Formula: Chemical Formula: (Na37K9Ca10)S56(Si42Al42)S84O168(SO4)12•6(H2O)
Help on Composition: Composition: Molecular Weight = 8,075.57 gm
   Potassium   4.44 %  K     5.35 % K2O
   Sodium     10.37 %  Na   13.98 % Na2O
   Calcium     4.34 %  Ca    6.08 % CaO
   Aluminum   13.87 %  Al   26.20 % Al2O3
   Silicon    14.78 %  Si   31.62 % SiO2
   Hydrogen    0.08 %  H     0.68 % H2O
   Sulfur      4.54 %  S    11.33 % SO3
   Chlorine    4.60 %  Cl    4.60 % Cl
                -   %   Cl   -1.04 % -O=Cl2   
   Oxygen     42.94 %  O
   Fluorine    0.04 %  F     0.04 % F
                -   %   F    -0.02 % -O=F2    
             ______        ______ 
             100.00 %       98.82 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na36.43K9.18Ca8.75Si42.5Al41.5O168(SO4)11.43F0.16Cl10.48�3.03(H2O)
Help on Environment: Environment: Found in a pyroclastic sequence, associated with the Latera caldera collapse in the Latium volcanic area. Cancrinite-sodalite group.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Farnese, Viterbo province, Latium, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: IMA2004-043
 

Farneseite Image

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  Farneseite

Comments: Crystal cluster of farneseite. Shown are the hexagonal truncated pyramid habit and terminations crossed by striations..
Location: Farnese, Viterbo province, Latium, Italy. Scale: Crystal size 1.2 mm.
© Gruppo Mineralogico Romano

Farneseite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.87363
Help on Cell Dimensions: Cell Dimensions: a = 12.8784, c = 37.0078, Z = 1; V = 5,315.55 Den(Calc)= 2.52
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.722(1)(300 ), 3.485(0.65)(216 ), 3.119(0.36)(218,223 ),2.149(0.34)(4.0.11,330), 2.648(0.32)(0.0.14,228), 3.668(0.26)(215 ), 3.862(0.23)(109 ), 5.404(0.2)(106 ), 2.857(0.18)(315,1.1.12),
 

Physical Properties of Farneseite

Help on Cleavage: Cleavage: {001} Poor
Help on Color: Color: Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Farneseite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.038 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1988,KC= 0.2067
Ncalc = 1.52
Help on Optical Data: Optical Data: Uniaxial (+), w=1.499, e=1.503, bire=0.0040.
 

Calculated Properties of Farneseite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.49 gm/cc
note: Specific Gravity of Farneseite =2.52 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0075132242
Boson Index = 0.9924867758
Help on Photoelectric: Photoelectric: PEFarneseite = 2.70 barns/electron
U=PEFarneseite x relectron= 6.71 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 63.34 (Gamma Ray American Petroleum Institute Units)
Concentration of Farneseite per GRapi unit = 1.58 (%)

Estimated Radioactivity from Farneseite - barely detectable

 

Farneseite Classification

Help on  Dana Class: Dana Class: 76.02.05.18 (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
Help on  Strunz Class: 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 Farneseite Information

Help on References: References: NAME( AmMin, v91, p1454) PHYS. PROP.(AmMin, v91, p1454) OPTIC PROP.(AmMin, v91, p1454)
Help on See Also: See Also: Links to other databases for Farneseite :
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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Print or Cut-and-Paste your Farneseite Specimen Label here :

Farneseite

(Na37K9Ca10)S56(Si42Al42)S84O168(SO4)12•6(H2O)
Dana No: 76.02.05.18 Strunz No: 09.FB.05
Locality:

 

Notes:

 

 
   
 


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