Mineralogy Database

Tugtupite Mineral Data

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General Tugtupite Information

Help on Chemical  Formula: Chemical Formula: Na4AlBeSi4O12Cl
Help on Composition: Composition: Molecular Weight = 467.74 gm
   Sodium     19.66 %  Na   26.50 % Na2O
   Beryllium   1.93 %  Be    5.35 % BeO
   Aluminum    5.77 %  Al   10.90 % Al2O3
   Silicon    24.02 %  Si   51.38 % SiO2
   Chlorine    7.58 %  Cl    7.58 % Cl
                -   %   Cl   -1.71 % -O=Cl2   
   Oxygen     41.05 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na4AlBe(Si4O12)Cl
Help on Environment: Environment: Alkali-rich, silica-poor intrusive igneous rocks.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Tugtup agatakorfia, Tunugdliarfik, Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality
Help on Name Pronunciation: Name Pronunciation: Tugtupite + Pronunciation Say TUGTUPITE
Help on Synonym: Synonym: ICSD 69958
  PDF 38-472
 

Tugtupite Image

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  Tugtupite

Comments: Albite hosting a 1.2 cm mass of partially gem quality tugtupite.
Location: Tugtup, Greenland. Scale: 2.1 x1.3 cm.
© John Veevaert

Tugtupite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.02726
Help on Cell Dimensions: Cell Dimensions: a = 8.583, c = 8.817, Z = 2; V = 649.53 Den(Calc)= 2.39
Help on Crystal System: Crystal System: Tetragonal - Disphenoidal H-M Symbol (4) Space Group: I 4
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.52(1), 6.13(0.8), 3.57(0.6),
 

Physical Properties of Tugtupite

Help on Cleavage: Cleavage: {111} Imperfect
Help on Color: Color: White, Pink, Crimson, Blue, Green.
Help on Density: Density: 2.36
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luminescence: Luminescence: Fluorescent and tenebrescent, Short UV=dark crimson, Long UV=deep rich orange light crimson.
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: white
 

Optical Properties of Tugtupite

Help on Dichroism (e): Dichroism (e): colorless.
Help on Dichroism (w): Dichroism (w): colorless.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.024 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.036 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2088,KPDmeas= 0.2114,KC= 0.2166
Ncalc = 1.51 - 1.52
Help on Optical Data: Optical Data: Uniaxial (+), w=1.496, e=1.502, bire=0.0060.
 

Calculated Properties of Tugtupite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.32 gm/cc
note: Specific Gravity of Tugtupite =2.36 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PETugtupite = 1.91 barns/electron
U=PETugtupite x rElectron Density= 4.43 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tugtupite is Not Radioactive
 

Tugtupite Classification

Help on  Dana Class: Dana Class: 76.02.03.07 (76)Tectosilicate Al-Si Framework
  (76.02)Feldspathoids and related species
  (76.02.03)Sodalite group
 
76.02.03.01 Sodalite Na8Al6Si6O24Cl2 P 43n 4 3m
 
76.02.03.02 Nosean Na8Al6Si6O24(SO4) P 43m 4 3m
 
76.02.03.03 Hauyne (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2 P 43n 4 3m
 
76.02.03.04 Lazurite Na3Ca(Al3Si3O12)S P 43n 4 3m
 
76.02.03.05 Bicchulite Ca2Al2SiO6(OH)2 I 43m 4 3m
 
76.02.03.06 Kamaishilite Ca2Al2SiO6(OH)2 I-lattice Tetra
 
76.02.03.07 Tugtupite Na4AlBeSi4O12Cl I 4 4
 
76.02.03.08 Tsaregorodtsevite N(CH3)4AlSi5O12 I 222 2 2 2
Help on  Strunz Class: Strunz Class: 09.FB.10 09 - SILICATES (Germanates)
  09.F - Tektosilicates without Zeolitic H2O
  09.FB -Tektosilicates with additional anions
 
09.FB.10 Bicchulite Ca2Al2SiO6(OH)2 I 43m 4 3m
 
09.FB.10 Danalite Fe4Be3(SiO4)3S P 43n 4 3m
 
09.FB.10 Hauyne (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2 P 43n 4 3m
 
09.FB.10 Genthelvite Zn4Be3(SiO4)3S P 43n 4 3m
 
09.FB.10 Helvite Mn4Be3(SiO4)3S P 43n 4 3m
 
09.FB.10 Lazurite Na3Ca(Al3Si3O12)S P 43n 4 3m
 
09.FB.10 Kamaishilite Ca2Al2SiO6(OH)2 I-lattice Tetra
 
09.FB.10 Nosean Na8Al6Si6O24(SO4) P 43m 4 3m
 
09.FB.10 Sodalite Na8Al6Si6O24Cl2 P 43n 4 3m
 
09.FB.10 Tugtupite Na4AlBeSi4O12Cl I 4 4
 
09.FB.10 Tsaregorodtsevite N(CH3)4AlSi5O12 I 222 2 2 2
 

Other Tugtupite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Tugtupite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - CalTech Mineral Spectroscopy
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - GeoScienceWorld
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - MinDAT
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - WWW-MINCRYST

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Tugtupite

Na4AlBeSi4O12Cl
Dana No: 76.02.03.07 Strunz No: 09.FB.10
Locality:

 

Notes:

 

 
   
 


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