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 % K₂O

Barium 16.96 % Ba 18.94 % BaO

Sodium 0.47 % Na 0.64 % Na₂O

Magnesium 10.51 % Mg 17.43 % MgO

Manganese 5.66 % Mn 7.30 % MnO

Aluminum 11.67 % Al 22.04 % Al₂O₃

Silicon 11.57 % Si 24.74 % SiO₂

Hydrogen 0.42 % H 3.71 % H₂O

Oxygen 39.53 % O

______ ______

100.00 % 98.68 % = TOTAL OXIDE

Empirical Formula:

Ba_0.6K_0.4Na_0.1Mg_2.1Mn²⁺_0.5Al_0.2Si₂Al_1.9O₁₀(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 - PrismaticH-M Symbol (2/m) Space Group: C 2/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.37(1), 2.02(0.55), 2.52(0.55),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Gnos E , Armbruster T , American Mineralogist , 85 (2000) p.242-250, Kinoshitalite, Ba(Mg)3(Al2Si2)O10(OH,F)2, a brittle mica from a manganese, deposit in Oman: Paragenesis and crystal chemistry

View Additional jPOWD Structure files for Kinoshitalite
[1] [2]

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:

PE_{Kinoshitalite}= 73.64 barns/electron
U=PE_{Kinoshitalite} 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 :

A Bijoux Google Search for Kinoshitalite
Adam's Minerals Google Search for Kinoshitalite
Cape Minerals Google Search for Kinoshitalite
Dakota Matrix Minerals Google Search for Kinoshitalite
Excalibur Mineral Corp. Google Search for Kinoshitalite
Exceptional Minerals Google Search for Kinoshitalite
John Betts Fine Minerals Search for Kinoshitalite
McDougall Minerals Google Search for Kinoshitalite
Mineral News Website Link
Rock and Mineral Shows Google Search for Kinoshitalite
Weinrich Minerals, Inc. Google Search 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 Español

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: