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Kalifersite Mineral Data

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General Kalifersite Information

Help on Chemical  Formula: Chemical Formula: (K,Na)5Fe+++7Si20O50(OH)6•12(H2O)
Help on Composition: Composition: Molecular Weight = 2,242.17 gm
   Potassium   6.10 %  K     7.35 % K2O
   Sodium      1.54 %  Na    2.07 % Na2O
   Iron       17.44 %  Fe   24.93 % Fe2O3
   Silicon    25.05 %  Si   53.59 % SiO2
   Hydrogen    1.35 %  H    12.05 % H2O
   Oxygen     48.52 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K3.5Na1.5Fe3+7Si20O50(OH)6•12(H2O)
Help on Environment: Environment: In a hydrothermally altered pegmatite. Polysomatic series with palygorskite and sepiolite.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Mt. Kukisvumchorr, Khibina massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the chemical composition: KALIum (Potassium), FERrum (Iron), and SIlicium (Silicon).
Help on Name Pronunciation: Name Pronunciation: Kalifersite + Pronunciation Say KALIFERSITE
Help on Synonym: Synonym: ICSD 85700

Kalifersite Image

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Comments: Brownish-red crystalline granular aggregates of kalifersite in rock matrix composed of fibers to 5mm.
Location: Mt. Rasvumchorr, Khibiny massif, Kola Peninsula, Russia. Scale: Specimen size 3.5 x 2 x 1.5cm.
© Tom Loomis / Dakota Matrix

Kalifersite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7234:1:0.2575
Help on Cell Dimensions: Cell Dimensions: a = 14.86, b = 20.54, c = 5.29, Z = 1; alpha = 95.6°, beta = 92.3°, gamma = 94.4° V = 1,600.90 Den(Calc)= 2.33
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 12.36(1), 11.6(0.4), 3.411(0.37),

Physical Properties of Kalifersite

Help on Cleavage: Cleavage: {100} Good, {010} Good
Help on Color: Color: Brownish pink.
Help on Density: Density: 2.28 - 2.37, Average = 2.32
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Fibrous - Thin, elongated fractures produced by crystal forms or intersecting cleavages (e.g. asbestos).
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Silky
Help on Streak: Streak: white

Optical Properties of Kalifersite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.081 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.083 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2286,KPDmeas= 0.2291,KC= 0.2493
Ncalc = 1.57 - 1.59
Help on Optical Data: Optical Data: Biaxial (+), a=1.523, b=1.525, g=1.55, bire=0.0270, 2V(Calc)=32, 2V(Meas)=30. Dispersion not discernible.

Calculated Properties of Kalifersite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.32 gm/cc
note: Specific Gravity of Kalifersite =2.33 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEKalifersite = 6.72 barns/electron
U=PEKalifersite x relectron= 15.59 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 87.88 (Gamma Ray American Petroleum Institute Units)
Concentration of Kalifersite per GRapi unit = 1.14 (%)

Estimated Radioactivity from Kalifersite - barely detectable


Kalifersite Classification

Help on  Dana Class: Dana Class: 74.03.01a.04 (74)Phyllosilicate Modulated Layers
  (74.03)with joined strips
  (74.03.01a)Palygorskite-sepiolite group (Palygorskite subgroup)
74.03.01a.01 Palygorskite (Mg,Al)2Si4O10(OH)•4(H2O) C 2/m 2/m
74.03.01a.02 Tuperssuatsiaite Na(Fe,Mn)3[Si8O20](OH)2•n(H2O) C 2/m Mono
74.03.01a.03 Yofortierite (Mn,Mg)5Si8O20(OH)2•8-9(H2O) Pn(?) m
74.03.01a.04 Kalifersite! (K,Na)5Fe7Si20O50(OH)6•12(H2O) P1 1
Help on  Strunz Class: Strunz Class: 09.EE.25 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EE -Single tetrahedral nets of 6-membered rings
09.EE.25 Falcondoite (Ni,Mg)4Si6O15(OH)2•6(H2O) Pncn 2/m 2/m 2/m
09.EE.25 Loughlinite Na2Mg3Si6O16•8(H2O) Unk Ortho
09.EE.25 Kalifersite! (K,Na)5Fe7Si20O50(OH)6•12(H2O) P1 1
09.EE.25 Sepiolite Mg4Si6O15(OH)2•6(H2O) Pnan 2/m 2/m 2/m

Other Kalifersite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Eur. J. Min.,Vol.10,p865,1998) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Kalifersite :
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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Dana No: 74.03.01a.04 Strunz No: 09.EE.25





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