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Kulkeite Mineral Data

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General Kulkeite Information

Help on Chemical  Formula: Chemical Formula: Na0.35Mg8AlSi7O20(OH)10
Help on Composition: Composition: Molecular Weight = 942.67 gm
   Sodium      0.85 %  Na    1.15 % Na2O
   Magnesium  20.63 %  Mg   34.20 % MgO
   Aluminum    6.87 %  Al   12.98 % Al2O3
   Silicon    19.66 %  Si   42.07 % SiO2
   Hydrogen    1.07 %  H     9.56 % H2O
   Oxygen     50.92 %  O
             ______        ______ 
             100.00 %       99.96 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.35Mg8Al2.4Si6.6O20(OH)10
Help on Environment: Environment: Meta-evaporite sequence.
Help on IMA Status: IMA Status: Approved IMA 1980
Help on Locality: Locality: El Mourdur Hill, near Derran, 35 km W of Ksar El Boukhari, Tell Atlas Mountians, Algeria. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Holger Kulke, geologist, Essen, Germany.
Help on Name Pronunciation: Name Pronunciation: Kulkeite Say KULKEITE
 

Kulkeite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5784:1:2.5989
Help on Cell Dimensions: Cell Dimensions: a = 5.319, b = 9.195, c = 23.897, Z = 2; beta = 97.1° V = 1,159.80 Den(Calc)= 2.70
Help on Crystal System: Crystal System: Monoclinic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.9(1), 3.38(0.8), 11.9(0.8),
 

Physical Properties of Kulkeite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Colorless.
Help on Density: Density: 2.7
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Kulkeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.05 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2066,KPDmeas= 0.2066,KC= 0.2175
Ncalc = 1.59
Help on Optical Data: Optical Data: Biaxial (-), a=1.552, b=1.5605, g=1.561, bire=0.0090, 2V(Calc)=26, 2V(Meas)=24. Dispersion r < v.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Kulkeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.71 gm/cc
note: Specific Gravity of Kulkeite =2.70 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEKulkeite = 1.45 barns/electron
U=PEKulkeite x rElectron Density= 3.93 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kulkeite is Not Radioactive
 

Kulkeite Classification

Help on  Dana Class: Dana Class: 71.04.02.06 (71)Phyllosilicate Sheets of Six-Membered Rings
  (71.04)interlayered 1:1, 2:1, and octahedra
  (71.04.02)Interstratified Chlorite-Smectite group
 
71.04.02.01 Dozyite (Mg7Al2)(Si4Al2)O15(OH)12 Cm m
 
71.04.02.02 Lunijianlaite LiAl6(Si7Al)O20(OH)10 Unk Mono
 
71.04.02.03 Saliotite Na0.5Li0.5Al3AlSi3O10(OH)5 C 2/m 2/m
 
71.04.02.04 Tosudite Na0,5(Al,Mg)6(Si,Al)8O18(OH)12•5(H2O) Unk Ortho
 
71.04.02.05 Corrensite (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10•n(H2O) Unk Ortho
 
71.04.02.06 Kulkeite Na0.35Mg8AlSi7O20(OH)10 Unk Mono
 
71.04.02.07 Rectorite (Na,Ca)Al4(Si,Al)8O20(OH)4•2(H2O) Unk Mono
 
71.04.02.08 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe)2-3(Si,Al)4O10(OH)2•n(H2O) Unk Mono
 
71.04.02.09 Glagolevite! NaMg6[Si3AlO10](OH,O)8•H2O C1 1
Help on  Strunz Class: Strunz Class: 09.EC.60 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
 
09.EC.60 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe)2-3(Si,Al)4O10(OH)2•n(H2O) Unk Mono
 
09.EC.60 Dozyite (Mg7Al2)(Si4Al2)O15(OH)12 Cm m
 
09.EC.60 Corrensite (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10•n(H2O) Unk Ortho
 
09.EC.60 Kulkeite Na0.35Mg8AlSi7O20(OH)10 Unk Mono
 
09.EC.60 Karpinskite (Mg,Ni)2Si2O5(OH)2(?) Unk Mono
 
09.EC.60 Illite* (K,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,(H2O)] C 2/m 2/m
 
09.EC.60 Hydrobiotite [K(Mg,Fe)3(Al,Fe)Si3O10(OH,F)2]•[(Mg,Fe,Al)3(Si,Al)4O10(OH)2•4(H2O)] C 2/m 2/m
 
09.EC.60 Lunijianlaite LiAl6(Si7Al)O20(OH)10 Unk Mono
 
09.EC.60 Rectorite (Na,Ca)Al4(Si,Al)8O20(OH)4•2(H2O) Unk Mono
 
09.EC.60 Saliotite Na0.5Li0.5Al3AlSi3O10(OH)5 C 2/m 2/m
 
09.EC.60 Tosudite Na0,5(Al,Mg)6(Si,Al)8O18(OH)12•5(H2O) Unk Ortho
 
09.EC.60 Brinrobertsite! (Na,K,Ca)x(Al,Fe,Mg)4(Si,Al)8O20(OH)4•3.54(H2O)[x=0.35,n=3.54] pseudo 2/m 2/m
 

Other Kulkeite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Kulkeite :
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

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Print or Cut-and-Paste your Kulkeite Specimen Label here :

Kulkeite

Na0.35Mg8AlSi7O20(OH)10
Dana No: 71.04.02.06 Strunz No: 09.EC.60
Locality:

 

Notes:

 

 
   
 


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