Alloriite Mineral Data

General Alloriite Information

Chemical Formula:

Na5K1.5Ca(Si6Al6O24)(SO4)(OH)0.5•H2O

Composition:

Molecular Weight = 4,362.65 gm

Potassium 5.57 % K 6.70 % K₂O

Sodium 10.10 % Na 13.61 % Na₂O

Calcium 4.47 % Ca 6.26 % CaO

Aluminum 14.06 % Al 26.57 % Al₂O₃

Silicon 16.26 % Si 34.79 % SiO₂

Hydrogen 0.24 % H 2.11 % H₂O

Carbon 0.19 % C 0.71 % CO₂

Sulfur 3.59 % S 8.96 % SO₃

Chlorine 0.37 % Cl 0.37 % Cl

- % Cl -0.08 % -O=Cl₂

Oxygen 45.15 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na_19.16K_6.21Ca_4.87Si_25.26Al_22.74O₉₆(SO₄)_4.88(CO₃)_0.7Cl_0.46(OH)_0.76ï¿½4.73(H₂O)

Environment:

Sabatino volcanic complex. Cancrinite group. Afghanite structure type.

IMA Status:

Approved IMA 2006 (Dana # Added)

Locality:

Monte Cavalluccio, Campagnano municipality, Roma province, Latium region, Italy Link to MinDat.org Location Data.

Name Origin:

Named for Roberto Allori (1933*), Italian amateur mineralogist and collector, who found the mineral.

Synonym:

IMA2006-020

Alloriite Image

Images:

Alloriite

Comments: Colorless alloriite prisms in vug.
Location: Monte Cavalluccio, near Campagnano di Roma, Rome, Latium, Italy. Scale: See Image.
© Rruff Database

Alloriite Crystallography

Axial Ratios:

a:c = 1:1.65529

Cell Dimensions:

a = 12.892, c = 21.34, Z = 1; V = 3,071.61 Den(Calc)= 2.36

Crystal System:

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

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

By Intensity(I/I_o): 3.33(1), 4.85(0.9), 3.76(0.8),2.694(0.7), 3.68(0.7), 11.3(0.7), 2.795(0.6), 4.03(0.6),

Physical Properties of Alloriite

Cleavage:

{100} Imperfect

Color:

Colorless.

Density:

2.35

Diaphaneity:

Transparent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

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

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

5 - Apatite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Alloriite

Gladstone-Dale:

CI meas= -0.033 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.211,KPDmeas= 0.2119,KC= 0.2052
Ncalc = 1.48

Optical Data:

Uniaxial (+), w=1.497, e=1.499, bire=0.0020.

Calculated Properties of Alloriite

Electron Density:

Bulk Density (Electron Density)=2.34 gm/cc
note: Specific Gravity of Alloriite =2.36 gm/cc.

Fermion Index:

Fermion Index = 0.0081685588
Boson Index = 0.9918314412

Photoelectric:

PE_Alloriite= 2.55 barns/electron
U=PE_Alloriite x r_electron= 5.96 barns/cc.

Radioactivity:

GRapi = 79.52 (Gamma Ray American Petroleum Institute Units)
Concentration of Alloriite per GRapi unit = 1.26 (%)

Estimated Radioactivity from Alloriite - barely detectable

Alloriite Classification

Dana Class:

76.02.05.19 (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 Alloriite Information

References:

NAME( AmMin, v94:399) PHYS. PROP.(Geology of Ore Deposits, v49:752) OPTIC PROP.(Geology of Ore Deposits, v49:752)

See Also:

Links to other databases for Alloriite :
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 Alloriite Specimen Label here :

Alloriite

Na5K1.5Ca(Si6Al6O24)(SO4)(OH)0.5•H2O
Dana No: 76.02.05.19 Strunz No: 09.FB.05
Locality:

Notes:

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