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Hydrougrandite Mineral Data

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General Hydrougrandite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Mg,Fe++)3(Fe+++,Al)2(SiO4)3-x(OH)4x
Help on Composition: Composition: Molecular Weight = 460.23 gm
   Calcium    15.68 %  Ca   21.93 % CaO
   Magnesium   4.75 %  Mg    7.88 % MgO
   Aluminum    2.93 %  Al    5.54 % Al2O3
   Iron       21.84 %  Fe    4.68 % FeO / 26.02 % Fe2O3
   Silicon    12.21 %  Si   26.11 % SiO2
   Hydrogen    0.88 %  H     7.83 % H2O
   Oxygen     41.72 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.8Mg0.9Fe2+0.3Fe3+1.5Al0.5(SiO4)2(OH)4
Help on IMA Status: IMA Status: Discredited IMA 1966 - Valid Species (Pre-IMA) 1954
Help on Locality: Locality: Hsiao-sungshan, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the hydrous analog of ugrandite.

Hydrougrandite Crystallography

Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I a3d

Physical Properties of Hydrougrandite

Help on Color: Color: Green.
Help on Density: Density: 3.45
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Luster: Luster: Vitreous (Glassy)

Optical Properties of Hydrougrandite

Help on Optical Data: Optical Data: NCalc= 1.85 - from Gladstone-Dale relationship (KC = 0.245) where Ncalc=Dmeas*KC+1

Calculated Properties of Hydrougrandite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.42 gm/cc
note: Specific Gravity of Hydrougrandite =3.45 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEHydrougrandite = 9.03 barns/electron
U=PEHydrougrandite x rElectron Density= 30.89 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hydrougrandite is Not Radioactive

Hydrougrandite Classification

Help on  Dana Class: Dana Class: (51)Nesosilicate Minerals
  (51.00)Without Dana Classification Numbers
  (51.00.00)Nesosilicate Hydrougrandite? (Ca,Mg,Fe)3(Fe,Al)2(SiO4)3-x(OH)4x I a3d 4/m 3 2/m Ursilite* (Mg,Ca)4[(UO2)4(OH)5/(Si2O5)5.5]•13(H2O) Unk Ortho
Help on  Strunz Class: Strunz Class: 09.AX.00 09 - SILICATES (Germanates)
  09.A - Unclassified Strunz Nesosilicates
  09.AX -Nesosilicate
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 Hydrougrandite Information

Help on References: References: NAME( Acta Geol. Sinica, 44, 219) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Hydrougrandite :
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: Strunz No: 09.AX.00