Mineralogy Database

Sohngeite Mineral Data

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General Sohngeite Information

Help on Chemical  Formula: Chemical Formula: Ga(OH)3
Help on Composition: Composition: Molecular Weight = 120.75 gm
   Gallium   57.74 %  Ga   77.62 % Ga2O3
   Hydrogen   2.50 %  H    22.38 % H2O
   Oxygen    39.75 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ga(OH)3
Help on Environment: Environment: Alteration product of gallite-bearing germanite in an oxidation zone of a dolostone-hosted hydrothermal polymetallic ore deposit.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Tsumeb, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for A.P.G. Sohnge, formerly Chief Geologist, Tsumeb Corporation, Tsumeb, Namibia.
Help on Name Pronunciation: Name Pronunciation: Sohngeite + Pronunciation Say SOHNGEITE
Help on Synonym: Synonym: Soehngeite

Sohngeite Image

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Comments: Minute, pale yellow sohngeite crystals to less than 0.2mm on matrix.
Location: Tsumeb mine, Tsumeb , Namibia. Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix

Sohngeite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 7.47, Z = 8; V = 416.83 Den(Calc)= 3.85
Help on Crystal System: Crystal System: Isometric - Diploidal H-M Symbol (2/m 3) Space Group: I m3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.74(1), 1.669(0.7), 2.63(0.6),

Physical Properties of Sohngeite

Help on Color: Color: White, Pale yellow, Pale brown, Pale greenish yellow.
Help on Density: Density: 3.84
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 4-4.5 - Between Fluorite and Apatite

Optical Properties of Sohngeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.079 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.081 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1912,KPDmeas= 0.1917,KC= 0.208
Ncalc = 1.8
Help on Optical Data: Optical Data: Isotropic, n=1.736.

Calculated Properties of Sohngeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.69 gm/cc
note: Specific Gravity of Sohngeite =3.84 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001945646
Boson Index = 0.9998054354
Help on Photoelectric: Photoelectric: PESohngeite = 31.43 barns/electron
U=PESohngeite x rElectron Density= 115.95 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sohngeite is Not Radioactive

Sohngeite Classification

Help on  Dana Class: Dana Class: (06)Hydroxides and Oxides Containing Hydroxyl
  (06.03)with (OH)3 or (OH)6 groups
  (06.03.05)Dzhalindite Group Dzhalindite In(OH)3 I m3 2/m 3 Sohngeite Ga(OH)3 I m3 2/m 3 Bernalite Fe(OH)3 Pmmn 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.FC.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FC -Hydroxides with OH, without H2O; corner-sharing octahedra
04.FC.05 Bernalite Fe(OH)3 Pmmn 2/m 2/m 2/m
04.FC.05 Dzhalindite In(OH)3 I m3 2/m 3
04.FC.05 Sohngeite Ga(OH)3 I m3 2/m 3

Other Sohngeite Information

Help on References: References: NAME( Athena) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Sohngeite :
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

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Dana No: Strunz No: 04.FC.05





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