Taneyamalite Mineral Data

General Taneyamalite Information

Chemical Formula:

(Na,Ca)(Mn++,Mg)12[(Si,Al)6O17]2(O,OH)10

Composition:

Molecular Weight = 1,697.49 gm

Sodium 1.22 % Na 1.64 % Na₂O

Calcium 0.24 % Ca 0.33 % CaO

Magnesium 1.58 % Mg 2.61 % MgO

Manganese 18.77 % Mn 24.24 % MnO

Aluminum 1.11 % Al 2.10 % Al₂O₃

Iron 15.79 % Fe 12.27 % FeO / 8.94 % Fe₂O₃

Silicon 19.03 % Si 40.71 % SiO₂

Hydrogen 0.80 % H 7.11 % H₂O

Oxygen 41.47 % O

______ ______

100.00 % 99.95 % = TOTAL OXIDE

Empirical Formula:

Na_0.9Ca_0.1Mn²⁺_5.8Fe²⁺_2.9Fe³⁺_1.9Mg_1.1Al_0.3Si_11.5Al_0.4O_30.6(OH)_13.4

Environment:

In cracks in ferruginous chert, mafic rocks and limestones subjected to blueschist facies metamorphism.

IMA Status:

Approved IMA 1981

Locality:

Taneyama mine, Kumamoto Prefecture and Iwaizama mine, Saitama Prefecture, Honshu, Japan. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Taneyamalite + Pronunciation

Taneyamalite Image

Images:

Taneyamalite

Comments: Dark brown silky fibrous taneyamalite vein in manganese ore.
Location: Taneyama Mine, Toyo, Kumamoto, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Taneyamalite Crystallography

Axial Ratios:

a:b:c =1.0384:1:0.9658

Cell Dimensions:

a = 10.198, b = 9.82, c = 9.485, Z = 1; alpha = 90.5°, beta = 70.53°, gamma = 108.57° V = 848.89 Den(Calc)= 3.32

Crystal System:

Triclinic - Pedial H-M Symbol (1) Space Group: P1

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

By Intensity(I/I_o): 3.273(1), 9.29(0.8), 4.62(0.5),

Physical Properties of Taneyamalite

Cleavage:

{010} Perfect, {100} Fair

Color:

Greenish yellow, Grayish yellow.

Density:

3.3

Diaphaneity:

Translucent

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Flakes - Flat, thin crystals or aggregates.

Hardness:

5-6 - Between Apatite and Orthoclase

Luster:

Vitreous (Glassy)

Streak:

light yellow

Optical Properties of Taneyamalite

Gladstone-Dale:

CI meas= 0.056 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.067 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2063,KPDmeas= 0.2088,KC= 0.2212
Ncalc = 1.73 - 1.74

Optical Data:

Biaxial (-), a=1.646-1.697, b=1.664-1.72, g=1.676-1.732, bire=0.0300-0.0350, 2V(Calc)=70-76, 2V(Meas)=70.

Pleochroism (x):

nearly colorless or pale golden yellow.

Pleochroism (y):

nearly colorless or yellowish brown.

Pleochroism (z):

pale yellow or dark brown.

Calculated Properties of Taneyamalite

Electron Density:

Bulk Density (Electron Density)=3.23 gm/cc
note: Specific Gravity of Taneyamalite =3.30 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Taneyamalite= 10.31 barns/electron
U=PE_Taneyamalite x rElectron Density= 33.29 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Taneyamalite is Not Radioactive

Taneyamalite Classification

Dana Class:

69.02.03.02 (69)Inosilicate Chains with Side Branches or Loops

(69.02)with P>2

(69.02.03)Howieite group

69.02.03.01 Howieite Na(Fe,Mn)10(Fe,Al)2Si12O31(OH)13 P1,P1 Tri

69.02.03.02 Taneyamalite (Na,Ca)(Mn,Mg)12[(Si,Al)6O17]2(O,OH)10 P1 1

69.02.03.03 Deerite (Fe,Mn)6(Fe,Al)3Si6O20(OH)5 P 2₁/a 2/m

Strunz Class:

09.DH.65 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DH -Inosilicates with 4-periodic single chains, Si4O12

09.DH.65 Howieite Na(Fe,Mn)10(Fe,Al)2Si12O31(OH)13 P1,P1 Tri

09.DH.65 Taneyamalite (Na,Ca)(Mn,Mg)12[(Si,Al)6O17]2(O,OH)10 P1 1

Other Taneyamalite Information

References:

NAME( Dana8) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(AntBidBlaNic2)

See Also:

Links to other databases for Taneyamalite :
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

Search for Taneyamalite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Taneyamalite :

Ask about Taneyamalite 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 Taneyamalite Specimen Label here :

Taneyamalite

(Na,Ca)(Mn++,Mg)12[(Si,Al)6O17]2(O,OH)10
Dana No: 69.02.03.02 Strunz No: 09.DH.65
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.