Yamatoite Mineral Data (original) (raw)

General Yamatoite Information

Help on Chemical Formula: Chemical Formula:

(Mn++,Ca)3(V+++,Al)2(SiO4)3

Help on Composition: Composition:

Molecular Weight = 519.82 gm

Calcium 5.78 % Ca 8.09 % CaO

Manganese 23.78 % Mn 30.70 % MnO

Aluminum 2.60 % Al 4.90 % Al2O3

Vanadium 14.70 % V 21.62 % V2O3

Silicon 16.21 % Si 34.68 % SiO2

Oxygen 36.93 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Mn2+2.25Ca0.75V3+1.5Al0.5(SiO4)3

Help on Environment: Environment:

Discredited as Mn goldmanite, yet to be found in nature. A hypothicical Mn-V-dominant garnet end member.

Help on IMA Status: IMA Status:

Discredited IMA 1967 (Dana # Added)

Help on Locality: Locality:

Yamato mine, Kagoshima prefecture, Japan. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the locality.

Search for Yamatoite Images

Click Here To Search Images:

Yamatoite Crystallography

Help on Cell Dimensions: Cell Dimensions:

a = 11.97, Z = 5; V = 1,715.07 Den(Calc)= 2.52

Help on Crystal System: Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: I a3d

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.69(1), 3.01(0.7), 1.61(0.5),2.45(0.4), 1.67(0.2), 1.95(0.2), 2.19(0.2), 2.36(0.2),

Physical Properties of Yamatoite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Honey yellow, Dark red.

Help on Hardness: Hardness:

6-7 - Orthoclase-Quartz

Help on Streak: Streak:

white

Optical Properties of Yamatoite

Help on Gladstone-Dale: Gladstone-Dale:

CI calc= -0.512 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3327,KC= 0.2201
Ncalc = 1.55

Help on Optical Data: Optical Data:

Isotropic, n=1.822-1.855.

Calculated Properties of Yamatoite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.43 gm/cc
note: Specific Gravity of Yamatoite =2.52 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0081923223
Boson Index = 0.9918076777

Help on Photoelectric: Photoelectric:

PEYamatoite = 10.33 barns/electron
U=PEYamatoite x rElectron Density= 25.07 barns/cc.

Help on Radioactivity: Radioactivity:

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

Yamatoite Classification

Help on Dana Class: Dana Class:

51.04.03b.05 (51)Nesosilicate Insular SiO4 Groups Only

(51.04)with cations in [6] and >[6] coordination

(51.04.03b)Garnet group (Ugrandite series)

51.04.03b.01 Andradite Ca3Fe2(SiO4)3 I a3d 4/m 3 2/m

51.04.03b.02 Grossular Ca3Al2(SiO4)3 I a3d 4/m 3 2/m

51.04.03b.03 Uvarovite Ca3Cr2(SiO4)3 I a3d 4/m 3 2/m

51.04.03b.04 Goldmanite Ca3(V,Al,Fe)2(SiO4)3 I a3d 4/m 3 2/m

51.04.03b.05 Yamatoite? (Mn,Ca)3(V,Al)2(SiO4)3 I a3d 4/m 3 2/m

Help on Strunz Class: Strunz Class:

09.AX.00 09 - SILICATES (Germanates)

09.A - Unclassified Strunz Nesosilicates

09.AX -Garnet - Mn

09.AX.00 Hydrougrandite? (Ca,Mg,Fe)3(Fe,Al)2(SiO4)3-x(OH)4x I a3d 4/m 3 2/m

09.AX.00 Yamatoite! (Mn,Ca)3(V,Al)2(SiO4)3 I a3d 4/m 3 2/m

Other Yamatoite Information

Help on References: References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

Help on See Also: See Also:

Links to other databases for Yamatoite :
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

Search for Yamatoite using:

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

Visit our Advertisers for Yamatoite :

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

Ask about Yamatoite 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 Yamatoite Specimen Label here :

Yamatoite

(Mn++,Ca)3(V+++,Al)2(SiO4)3
Dana No: 51.04.03b.05 Strunz No: 09.AX.00
Locality:

Notes: