Farneseite Mineral Data

General Farneseite Information

Chemical Formula:

(Na37K9Ca10)S56(Si42Al42)S84O168(SO4)12•6(H2O)

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

Empirical Formula:

Na_36.43K_9.18Ca_8.75Si_42.5Al_41.5O₁₆₈(SO₄)_11.43F_0.16Cl_10.48·3.03(H₂O)

Environment:

Found in a pyroclastic sequence, associated with the Latera caldera collapse in the Latium volcanic area. Cancrinite-sodalite group.

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

Farnese, Viterbo province, Latium, Italy. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA2004-043

Farneseite Image

Images:

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

Axial Ratios:

a:c = 1:2.87363

Cell Dimensions:

a = 12.8784, c = 37.0078, Z = 1; V = 5,315.55 Den(Calc)= 2.52

Crystal System:

Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6₃/m

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

By Intensity(I/I_o): 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),

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

Camara F , Bellatreccia F , Della Ventura G , Mottana A , European Journal of Mineralogy , 17 (2005) p.839-846, Farneseite, a new mineral of the cancrinite - sodalite group, with a 14-layer stacking sequence: occurence and crystal structure, Locality: Latera Caldera, Farnese, Viterbo Province, Italy

Physical Properties of Farneseite

Cleavage:

{001} Poor

Color:

Colorless.

Diaphaneity:

Transparent

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Farneseite

Gladstone-Dale:

CI calc= 0.038 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1988,KC= 0.2067
Ncalc = 1.52

Optical Data:

Uniaxial (+), w=1.499, e=1.503, bire=0.0040.

Calculated Properties of Farneseite

Electron Density:

Bulk Density (Electron Density)=2.49 gm/cc
note: Specific Gravity of Farneseite =2.52 gm/cc.

Fermion Index:

Fermion Index = 0.0075132242
Boson Index = 0.9924867758

Photoelectric:

PE_Farneseite= 2.70 barns/electron
U=PE_Farneseite x r_electron= 6.71 barns/cc.

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

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

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

References:

NAME( AmMin, v91, p1454) PHYS. PROP.(AmMin, v91, p1454) OPTIC PROP.(AmMin, v91, p1454)

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

Search for Farneseite using:

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

Visit our Advertisers for Farneseite :

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

Ask about Farneseite 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 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: