Giuseppettite Mineral Data

General Giuseppettite Information

Chemical Formula:

[Na42K16Ca6]S64Si48Al48O192(SO4)10Cl2•5H2O

Composition:

Molecular Weight = 8,668.33 gm

Potassium 7.22 % K 8.69 % K₂O

Sodium 11.14 % Na 15.02 % Na₂O

Calcium 2.77 % Ca 3.88 % CaO

Aluminum 14.94 % Al 28.23 % Al₂O₃

Silicon 15.55 % Si 33.27 % SiO₂

Hydrogen 0.12 % H 1.04 % H₂O

Sulfur 3.70 % S 9.24 % SO₃

Chlorine 0.82 % Cl 0.82 % Cl

- % Cl -0.18 % -O=Cl₂

Oxygen 43.74 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₄₂K₁₆Ca₆Al₄₈Si₄₈O₁₉₂(SO₄)₁₀Cl₂•5(H₂O)

Environment:

As veinlets in a block of sanidinite volcanic ejecta.

IMA Status:

Approved IMA 1981

Locality:

At Sacrafano, in the Biachella Valley, Lazio, Italy. Link to MinDat.org Location Data.

Name Origin:

Named for Giuseppe Giuseppetti, Professor of Mineralogy, University of Pavia, Pava, Italy.

Name Pronunciation:

Giuseppettite + Pronunciation

Giuseppettite Image

Images:

Giuseppettite

Comments: Pale bluish-violet giuseppettite crystals.
Location: Sacrofano, Campagnano, Lazio, Italy. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Giuseppettite Crystallography

Axial Ratios:

a:c = 1:3.28687

Cell Dimensions:

a = 12.856, c = 42.256, Z = 1; V = 6,048.27 Den(Calc)= 2.38

Crystal System:

Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: P 3₁c

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

By Intensity(I/I_o): 3.712(1), 3.446(0.8), 3.126(0.7),

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

Bonaccorsi E , Microporous and Mesoporous Materials , 73 (2004) p.129-136, The crystal structure of giuseppettite, the 16-layer member of the cancrinite-, sodalite group, Locality: Sacrofano, Biachella Valley, Latium, Italy

Physical Properties of Giuseppettite

Cleavage:

None

Color:

Light violet blue.

Density:

2.35

Diaphaneity:

Transparent to Translucent

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Hardness:

6-7 - Orthoclase-Quartz

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Giuseppettite

Gladstone-Dale:

CI meas= -0.042 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2097,KPDmeas= 0.2123,KC= 0.2038
Ncalc = 1.48 - 1.49

Optical Data:

Uniaxial (+), w=1.491, e=1.507, bire=0.0160.

Calculated Properties of Giuseppettite

Electron Density:

Bulk Density (Electron Density)=2.35 gm/cc
note: Specific Gravity of Giuseppettite =2.38 gm/cc.

Fermion Index:

Fermion Index = 0.0077965074
Boson Index = 0.9922034926

Photoelectric:

PE_{Giuseppettite}= 2.55 barns/electron
U=PE_{Giuseppettite} x r_electron= 6.00 barns/cc.

Radioactivity:

GRapi = 102.89 (Gamma Ray American Petroleum Institute Units)
Concentration of Giuseppettite per GRapi unit = 0.97 (%)

Estimated Radioactivity from Giuseppettite - barely detectable

Giuseppettite Classification

Dana Class:

76.02.05.07 (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 Giuseppettite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990, AmMin, 90:771) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Giuseppettite :
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

Search for Giuseppettite using:

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

Visit our Advertisers for Giuseppettite :

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

Ask about Giuseppettite 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 Giuseppettite Specimen Label here :

Giuseppettite

[Na42K16Ca6]S64Si48Al48O192(SO4)10Cl2•5H2O
Dana No: 76.02.05.07 Strunz No: 09.FB.05
Locality:

Notes: