Mineralogy Database

Oxykinoshitalite Mineral Data

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General Oxykinoshitalite Information

Help on Chemical  Formula: Chemical Formula: (Ba,K)(Mg,Fe++,Ti)3(Si,Al)4O10O2
Help on Composition: Composition: Molecular Weight = 507.95 gm
   Potassium   3.31 %  K     3.99 % K2O
   Barium     12.98 %  Ba   14.49 % BaO
   Sodium      0.32 %  Na    0.43 % Na2O
   Calcium     0.08 %  Ca    0.11 % CaO
   Magnesium   6.60 %  Mg   10.95 % MgO
   Titanium    7.26 %  Ti   12.11 % TiO2
   Manganese   0.11 %  Mn    0.14 % MnO
   Aluminum    8.50 %  Al   16.06 % Al2O3
   Iron        9.79 %  Fe   11.74 % FeO /  0.94 % Fe2O3
   Silicon    13.05 %  Si   27.92 % SiO2
   Hydrogen    0.06 %  H     0.57 % H2O
   Oxygen     36.98 %  O
   Fluorine    0.97 %  F     0.97 % F
                -   %   F    -0.41 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba0.48K0.43Na0.07Ca0.01Mg1.38Fe2+0.83Ti0.77Fe3+0.02Mn2+0.01Si2.36Al1.6Fe3+0.04 O1.42O10(OH)0.32F0.26
Help on Environment: Environment: Found in olivine nephelinite dominated by nepheline basalt flows with minor nephelinite dykes, tuffs, and breccias. Mica group
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Fernando-do-Noronha Island, Brazil Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in accord with the IMA-approved nomenclature for minerals of them mica group (Rieder et al. 1998, Can. Mineral., 36, 905-912).
Help on Synonym: Synonym: IMA2004-013

Oxykinoshitalite Image

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Comments: Back-scattered-electron image of oxykinoshitalite, showing the prominent (001) cleavage, (CanMin, v43:1501).
Location: Fernando de Noronha Island, Pernambuco, Brazi. Scale: See Image.
© Canadian Mineralogist

Oxykinoshitalite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5765:1:1.0825
Help on Cell Dimensions: Cell Dimensions: a = 5.3516, b = 9.2817, c = 10.0475, Z = 2; beta = 100.337° V = 490.98 Den(Calc)= 3.44
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.637(1)(131), 2.172(0.9)(133), 3.13(0.7)(112.), 3.646(0.7)(112), 3.383(0.6)(002.), 1.547(0.5)(312.), 1.661(0.5)(135), 1.988(0.5)(133.), 2.435(0.5)(2

Physical Properties of Oxykinoshitalite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Bright orange, Brown.
Help on Density: Density: 3.3
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Splintery - Brittle fracture leaving splintery fragments.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: brown

Optical Properties of Oxykinoshitalite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.041 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2071,KPDmeas= 0.2159,KC= 0.2159
Ncalc = 1.71 - 1.74
Help on Optical Data: Optical Data: Biaxial (+), a=1.708, b=1.71, g=1.719, bire=0.0110

Calculated Properties of Oxykinoshitalite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.16 gm/cc
note: Specific Gravity of Oxykinoshitalite =3.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEOxykinoshitalite = 59.78 barns/electron
U=PEOxykinoshitalite x relectron= 189.00 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 45.76 (Gamma Ray American Petroleum Institute Units)
Concentration of Oxykinoshitalite per GRapi unit = 2.19 (%)

Estimated Radioactivity from Oxykinoshitalite - barely detectable


Oxykinoshitalite Classification

Help on  Dana Class: Dana Class: 71.02.02c.08 (71)Phyllosilicate Sheets of Six-Membered Rings
  (71.02)with 2:1 Layers
  (71.02.02c)Mica Group (Margarite subgroup)
71.02.02c.01 Margarite CaAl2(Al2Si2)O10(OH)2 C 2/c 2/m
71.02.02c.02 Clintonite Ca(Mg,Al)3(Al3Si)O10(OH)2 C 2/m 2/m
71.02.02c.03 Bityite CaLiAl2(AlBeSi2)O10(OH)2 C 2/c 2/m
71.02.02c.04 Anandite (Ba,K)(Fe,Mg)3(Si,Al,Fe)4O10(S,OH)2 C 2/m 2/m
71.02.02c.05 Kinoshitalite (Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2 C 2/m 2/m
71.02.02c.06 Ferrokinoshitalite! (Ba,K)(Fe,Mg)3(Si2Al2)O10(OH,F)2 C 2/m 2/m
71.02.02c.07 Ganterite! [Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2 C 2/c 2/m
71.02.02c.08 Oxykinoshitalite! (Ba,K)(Mg,Fe,Ti)3(Si,Al)4O10O2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.EC.35 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
09.EC.35 Clintonite Ca(Mg,Al)3(Al3Si)O10(OH)2 C 2/m 2/m
09.EC.35 Bityite CaLiAl2(AlBeSi2)O10(OH)2 C 2/c 2/m
09.EC.35 Anandite (Ba,K)(Fe,Mg)3(Si,Al,Fe)4O10(S,OH)2 C 2/m 2/m
09.EC.35 Kinoshitalite (Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2 C 2/m 2/m
09.EC.35 Ferrokinoshitalite! (Ba,K)(Fe,Mg)3(Si2Al2)O10(OH,F)2 C 2/m 2/m
09.EC.35 Oxykinoshitalite! (Ba,K)(Mg,Fe,Ti)3(Si,Al)4O10O2 C 2/m 2/m

Other Oxykinoshitalite Information

Help on References: References: NAME( AmMin, v91, p1205) PHYS. PROP.(AmMin, v91, p1205) OPTIC PROP.(AmMin, v91, p1205)
Help on See Also: See Also: Links to other databases for Oxykinoshitalite :
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: 71.02.02c.08 Strunz No: 09.EC.35





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