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Biachellaite Mineral Data
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General Biachellaite Information
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Chemical Formula: |
(Na,Ca,K)8(Si6Al6O24)(SO4)2(OH)0.5•H2O |
Composition: |
Molecular Weight = 1,172.24 gm |
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Potassium 0.83 % K 1.00 % K2O |
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Sodium 9.32 % Na 12.56 % Na2O |
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Calcium 10.26 % Ca 14.35 % CaO |
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Aluminum 13.81 % Al 26.09 % Al2O3 |
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Silicon 14.38 % Si 30.75 % SiO2 |
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Hydrogen 0.21 % H 1.92 % H2O |
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Sulfur 5.47 % S 13.66 % SO3 |
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Oxygen 45.72 % O |
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______ ______ |
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100.00 % 100.34 % = TOTAL OXIDE |
Empirical Formula: |
Na4.75Ca3K0.25Si6Al6O24(SO4)2(OH)0.5�(H2O) |
Environment: |
Cancrinite group |
IMA Status: |
Proposed IMA 2007 |
Locality: |
Biachella Valley, Sacrofano municipality, Rome province, Latium region, Italy Link to MinDat.org Location Data. |
Name Origin: |
Commission on New Minerals, Nomenclature and Classification (CNMNC) |
Synonym: |
IMA2007-044 |
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Biachellaite Crystallography
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Axial Ratios: |
a:c = 1:6.16471 |
Cell Dimensions: |
a = 12.913, c = 79.605, Z = 16; V = 11,495.44 Den(Calc)= 2.71 |
Crystal System: |
Trigonal - Pyramidal H-M Symbol (3) Space Group: P 3 |
X Ray Diffraction: |
By Intensity(I/Io): 3.72(1), 3.3(0.47), 11.07(0.19),3.576(0.18), 6.45(0.18), 3.22(0.16), 4.782(0.15), 3.469(0.14), |
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Optical Properties of Biachellaite
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Optical Data: |
NCalc= 1.55 - from Gladstone-Dale relationship (KC = 0.2047) where Ncalc=Dcalc*KC+1 |
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Calculated Properties of Biachellaite
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Electron Density: |
Bulk Density (Electron Density)=2.69 gm/cc note: Specific Gravity of Biachellaite =2.71 gm/cc. |
Fermion Index: |
Fermion Index = 0.0074828146 Boson Index = 0.9925171854 |
Photoelectric: |
PEBiachellaite = 2.78 barns/electron U=PEBiachellaite x relectron= 7.48 barns/cc. |
Radioactivity: |
GRapi = 11.95 (Gamma Ray American Petroleum Institute Units)
Concentration of Biachellaite per GRapi unit = 8.37 (%)
Estimated Radioactivity from Biachellaite - barely detectable
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Biachellaite Classification
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Dana Class: |
76.02.05.20 (76)Tectosilicate Al-Si Framework |
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(76.02)Feldspathoids and related species |
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(76.02.05)Cancrinite group |
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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 |
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76.02.05.02 Bystrite (Na,K)7Ca(Si6Al6)O24S4.5•(H2O) P 31c 3m |
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76.02.05.03 Cancrinite Na6Ca2Al6Si6O24(CO3)2 P 63 6 |
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76.02.05.04 Cancrisilite Na7Al5Si7O24(C03)•3(H2O) P 63 6 |
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76.02.05.05 Davyne Na4K2Ca2Si6Al6O24(SO4)Cl2 P 63/m 6/m |
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76.02.05.06 Franzinite [(Na,K)30Ca10][Si30Al30O120](SO4)10•2(H2O) P 321 3 2 |
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76.02.05.07 Giuseppettite [Na42K16Ca6]S64Si48Al48O192(SO4)10Cl2•5H2O P 31c 3m |
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76.02.05.08 Hydroxycancrinite Na4(AlSiO4)3(OH)•(H2O) P 63 6 |
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76.02.05.09 Liottite (Ca,Na,K)8(Si,Al)12O24[(SO4),(CO3),Cl,OH]4•(H2O) P 6m2 6 m2 |
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76.02.05.10 Microsommite (Na,Ca,K)7-8(Si,Al)12O24(Cl,SO4)2-3 P 6322 6 2 2 |
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76.02.05.11 Pitiglianoite Na6K2Si6Al6O24(SO4)•2(H2O) P 63 6 |
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76.02.05.12 Quadridavyne (Na,K)6Ca2Al6Si6O24Cl4 P 63/m 6/m |
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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 |
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76.02.05.14 Tounkite (Na,Ca,K)8Al6Si6O24(SO4)2Cl•(H2O) P 6222 6 2 2 |
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76.02.05.15 Vishnevite (Na,Ca,K)6(Si,Al)12O24[(SO4),(CO3),Cl2]2-4•n(H2O) P 6322 6 2 2 |
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76.02.05.16 Wenkite Ba4Ca6(Si,Al)20O39(OH)2(SO4)3•n(H2O)(?) P 62m 6 m2 |
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76.02.05.17 Marinellite! [(Na,K)42Ca6](Si36Al36O144)(SO4)8Cl2•6(H2O) P 31c or P 2c Trig |
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76.02.05.18 Farneseite! (Na37K9Ca10)S56(Si42Al42)S84O168(SO4)12•6(H2O) P 63/m 6/m 2/m 2/m |
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76.02.05.19 Alloriite! Na5K1.5Ca(Si6Al6O24)(SO4)(OH)0.5•H2O P 31c 3m |
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76.02.05.20 Biachellaite (Na,Ca,K)8(Si6Al6O24)(SO4)2(OH)0.5•H2O P 3 3 |
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76.02.05.21 IMA2008-006! [Na82.5Ca33K16.5](Si99Al99O396)(SO4)33•4H2O P 3 3 |
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76.02.05.22 Kyanoxalite! Na7(Al5-6Si6-7O24)(C2O4)0.5-1.0•5H2O P 63 6 |
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76.02.05.23 IMA2008-065! (Na,K)6Ca2(Si6Al6O24)Cl2(CO3) P 63 6 |
Strunz Class: |
09.FB.05 09 - SILICATES (Germanates) |
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09.F - Tektosilicates without Zeolitic H2O |
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09.FB -Tektosilicates with additional anions |
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09.FB.05 Bystrite (Na,K)7Ca(Si6Al6)O24S4.5•(H2O) P 31c 3m |
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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 |
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09.FB.05 Cancrisilite Na7Al5Si7O24(C03)•3(H2O) P 63 6 |
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09.FB.05 Cancrinite Na6Ca2Al6Si6O24(CO3)2 P 63 6 |
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09.FB.05 Hydroxycancrinite Na4(AlSiO4)3(OH)•(H2O) P 63 6 |
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09.FB.05 Franzinite [(Na,K)30Ca10][Si30Al30O120](SO4)10•2(H2O) P 321 3 2 |
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09.FB.05 Liottite (Ca,Na,K)8(Si,Al)12O24[(SO4),(CO3),Cl,OH]4•(H2O) P 6m2 6 m2 |
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09.FB.05 Davyne Na4K2Ca2Si6Al6O24(SO4)Cl2 P 63/m 6/m |
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09.FB.05 Giuseppettite [Na42K16Ca6]S64Si48Al48O192(SO4)10Cl2•5H2O P 31c 3m |
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09.FB.05 Quadridavyne (Na,K)6Ca2Al6Si6O24Cl4 P 63/m 6/m |
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09.FB.05 Pitiglianoite Na6K2Si6Al6O24(SO4)•2(H2O) P 63 6 |
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09.FB.05 Microsommite (Na,Ca,K)7-8(Si,Al)12O24(Cl,SO4)2-3 P 6322 6 2 2 |
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09.FB.05 Vishnevite (Na,Ca,K)6(Si,Al)12O24[(SO4),(CO3),Cl2]2-4•n(H2O) P 6322 6 2 2 |
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09.FB.05 Sacrofanite (Na,Ca,K)9Si6Al6O24[(OH),(SO4),(CO3),Cl)]4•n(H2O) P 63/mmc ? 6/m 2/m 2/m |
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09.FB.05 Marinellite! [(Na,K)42Ca6](Si36Al36O144)(SO4)8Cl2•6(H2O) P 31c or P 2c Trig |
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09.FB.05 Tounkite (Na,Ca,K)8Al6Si6O24(SO4)2Cl•(H2O) P 6222 6 2 2 |
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09.FB.05 IMA2008-065! (Na,K)6Ca2(Si6Al6O24)Cl2(CO3) P 63 6 |
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09.FB.05 Farneseite! (Na37K9Ca10)S56(Si42Al42)S84O168(SO4)12•6(H2O) P 63/m 6/m 2/m 2/m |
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09.FB.05 Biachellaite (Na,Ca,K)8(Si6Al6O24)(SO4)2(OH)0.5•H2O P 3 3 |
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09.FB.05 IMA2008-006! [Na82.5Ca33K16.5](Si99Al99O396)(SO4)33•4H2O P 3 3 |
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09.FB.05 Alloriite! Na5K1.5Ca(Si6Al6O24)(SO4)(OH)0.5•H2O P 31c 3m |
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Other Biachellaite Information
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See Also: |
Links to other databases for Biachellaite :
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 Biachellaite Specimen Label here :
Biachellaite
(Na,Ca,K)8(Si6Al6O24)(SO4)2(OH)0.5•H2O
Dana No: 76.02.05.20 Strunz No: 09.FB.05
Locality:
Notes:
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