Kinoshitalite Mineral Data
General Kinoshitalite Information
Chemical Formula:
(Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2
Composition:
Molecular Weight = 485.68 gm
Potassium 3.22 % K 3.88 % K2 O
Barium 16.96 % Ba 18.94 % BaO
Sodium 0.47 % Na 0.64 % Na2 O
Magnesium 10.51 % Mg 17.43 % MgO
Manganese 5.66 % Mn 7.30 % MnO
Aluminum 11.67 % Al 22.04 % Al2 O3
Silicon 11.57 % Si 24.74 % SiO2
Hydrogen 0.42 % H 3.71 % H2 O
Oxygen 39.53 % O
______ ______
100.00 % 98.68 % = TOTAL OXIDE
Empirical Formula:
Ba0.6 K0.4 Na0.1 Mg2.1 Mn2+ 0.5 Al0.2 Si2 Al1.9 O10 (OH)2
Environment:
In hausmannite-tephroite ore.
IMA Status:
Approved IMA 1973
Locality:
In the Noda-Tanagawa mine, Iwate Prefeture, and at Hokkejino, Kyoto Prefecture, Japan. Link to MinDat.org Location Data.
Name Origin:
Named for Dr. Kameki Kinshita (1896-1974), investigator of ore deposits in Japan.
Name Pronunciation:
Kinoshitalite + Pronunciation
Kinoshitalite Image
Images:
Kinoshitalite
Comments: Yellowish brown platy crystals of kinshitalite in granular matrix of grayish tephroite.
Location: Hokkejino, Kyoto Prefecture, Kinki Region, Honshu Island, Japan.
Scale: See Image.
© Rruff Database
Kinoshitalite Crystallography
Axial Ratios:
a:b:c =0.5778:1:1.1081
Cell Dimensions:
a = 5.345, b = 9.25, c = 10.25, Z = 2; beta = 99.99° V = 499.09 Den(Calc)= 3.23
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
X Ray Diffraction:
By Intensity(I/Io ): 3.37(1), 2.02(0.55), 2.52(0.55),
Physical Properties of Kinoshitalite
Cleavage:
{001} Perfect
Color:
Yellow brown, Colorless.
Density:
3.3
Diaphaneity:
Transparent to Translucent
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:
Scaly - Morphology like fish scales.
Hardness:
2.5-3 - Finger Nail-Calcite
Luster:
Vitreous (Glassy)
Streak:
yellow white
Optical Properties of Kinoshitalite
Gladstone-Dale:
CI meas = 0.009 (Superior) - where the CI = (1-KPDmeas /KC ) CI calc = -0.013 (Superior) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.1945,KPDmeas = 0.1904,KC = 0.192 Ncalc = 1.62 - 1.63
Optical Data:
Biaxial (-), a=1.619, b=1.628-1.633, g=1.635, bire=0.0160, 2V(Calc)=40-82, 2V(Meas)=23.
Pleochroism (x):
very light yellow.
Pleochroism (y):
light brownish yellow.
Pleochroism (z):
light brownish yellow.
Calculated Properties of Kinoshitalite
Electron Density:
Bulk Density (Electron Density)=3.17 gm/cc note: Specific Gravity of Kinoshitalite =3.30 gm/cc.
Fermion Index:
Fermion Index = 0.04 Boson Index = 0.96
Photoelectric:
PEKinoshitalite = 73.64 barns/electronU=PEKinoshitalite x r electron = 233.45 barns/cc.
Radioactivity:
GRapi = 44.65 (Gamma Ray American Petroleum Institute Units)
Concentration of Kinoshitalite per GRapi unit = 2.24 (%)
Estimated Radioactivity from Kinoshitalite - barely detectable
Kinoshitalite Classification
Dana Class:
71.02.02c.05 (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
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 Kinoshitalite Information
References:
NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)
See Also:
Links to other databases for Kinoshitalite :
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
15 - WWW-MINCRYST
Search for Kinoshitalite using:
[AOL ]
[Bing ]
[Dog Pile ]
[GeoScienceWorld ]
[HotBot ]
[Ixquick ]
[Lycos ]
[MAMMA ]
[Scirus ]
[Teoma ]
[WebCrawler ]
[Wikipedia ]
[YAHOO ]
Visit our Advertisers for Kinoshitalite :
Ask about Kinoshitalite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espa�ol
Print or Cut-and-Paste your Kinoshitalite Specimen Label here :
Kinoshitalite
(Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2
Dana No: 71.02.02c.05 Strunz No: 09.EC.35
Locality:
Notes:
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.