Mineralogy Database

Kalborsite Mineral Data

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General Kalborsite Information

Help on Chemical  Formula: Chemical Formula: K6Al4Si6BO20(OH)4Cl
Help on Composition: Composition: Molecular Weight = 989.63 gm
   Potassium  23.70 %  K    28.55 % K2O
   Aluminum   10.91 %  Al   20.61 % Al2O3
   Silicon    17.03 %  Si   36.43 % SiO2
   Boron       1.53 %  B     4.92 % B2O3
   Hydrogen    0.41 %  H     3.64 % H2O
   Chlorine    3.58 %  Cl    3.58 % Cl
                -   %   Cl   -0.81 % -O=Cl2   
   Oxygen     42.84 %  O
             ______        ______ 
             100.00 %       96.93 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K6Al4Si6B1.4O22.5(OH)4Cl
Help on Environment: Environment: Rims around lovozeroite in segregations of petolite, in richorrite pegmatite from a differentiated alkalic massif.
Help on IMA Status: IMA Status: Approved IMA 1980
Help on Locality: Locality: Mount Rasvumchorr, Khibiny massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition (KAllium, ALuminum,BORate, and SIlicon).
Help on Name Pronunciation: Name Pronunciation: Kalborsite + Pronunciation Say KALBORSITE
Help on Synonym: Synonym: ICSD 34580
  PDF 33-999

Kalborsite Image

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Comments: White crystals of kalborsite rimming eudialyte.
Location: Mt. Rasvumchorr, Chibiny, Kola Peninsula, Russia. Scale: FOV Est 4 mm.
© Diederik Visser

Kalborsite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.32575
Help on Cell Dimensions: Cell Dimensions: a = 9.851, c = 13.06, Z = 2; V = 1,267.37 Den(Calc)= 2.59
Help on Crystal System: Crystal System: Tetragonal - Scalenohedral H-M Symbol (4 2m) Space Group: P 42m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.08(1), 2.79(0.9), 3.44(0.8),2.94(0.8), 2.08(0.5), 2.24(0.5), 3.26(0.5),

Physical Properties of Kalborsite

Help on Cleavage: Cleavage: {110} Perfect
Help on Color: Color: Brownish pink, Colorless.
Help on Density: Density: 2.5
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Epitaxial - Crystallographic alignment with a precursor mineral
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white

Optical Properties of Kalborsite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2027,KPDmeas= 0.21,KC= 0.2087
Ncalc = 1.52 - 1.54
Help on Optical Data: Optical Data: Uniaxial (+), w=1.525, e=1.525, bire=0.0000.

Calculated Properties of Kalborsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.48 gm/cc
note: Specific Gravity of Kalborsite =2.50 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEKalborsite = 3.61 barns/electron
U=PEKalborsite x relectron= 8.93 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 338.72 (Gamma Ray American Petroleum Institute Units)
Concentration of Kalborsite per GRapi unit = 0.30 (%)

Estimated Radioactivity from Kalborsite - barely detectable


Kalborsite Classification

Help on  Dana Class: Dana Class: (77)Tectosilicate Zeolite group
  (77.02)related species
  (77.02.07)Dana Group Kalborsite K6Al4Si6BO20(OH)4Cl P 42m 4 2m
Help on  Strunz Class: Strunz Class: 09.GA.15 09 - SILICATES (Germanates)
  09.G - Tektosilicates with Zeolitic H2O
  09.GA -Zeolites with T5O10 Units � The Fibrous Zeolites
09.GA.15 Edingtonite BaAl2Si3O10•4(H2O) P 21212 2 2 2
09.GA.15 Kalborsite K6Al4Si6BO20(OH)4Cl P 42m 4 2m

Other Kalborsite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Kalborsite :
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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Dana No: Strunz No: 09.GA.15





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